American Artemis Return to the Moon For Good is underway, Mars attention and planning advancing, Outer Solar System search for life ongoing, and Interstellar craft on outgoing trajectories while first USA satellite launch on this day in 1958 ‘Explorer 1’ is celebrated and remembered.
Annual international conferences and events take place to further space exploration efforts in remembrance of Columbia 7 loss in 2003: Commander Richard D. Husband, Mission Specialist Laurel Clark, Payload Specialist Ilan Ramon (the ‘1st Israeli astronaut’) and Astronauts: William C. McCool, Michael P. Anderson, David M. Brown and Kalpana Chawla […]
Lunar New Year 2027 Spring Festival marks the Year of the Goat.
China Tianwen-1 orbiter reaches 6 full years of operations in Mars orbit; Lander & Rover touched down ~3 months after this date at Utopia Planitia 25.1°N, 109.9°E; launched July 2020, reached orbit 2021.
Mars 2020 Perseverance Rover reaches 5 full years on Mars surface having landed in Jezero Crater on this day in 2021; it carried Ingenuity helicopter – the first craft to successfully complete powered flights off-Earth.
Third annual observation of 1st successful commercial lunar landing on Moon by Intuitive Machines and its IM-1 Nova-C Lander "Odysseus". This mission also marks the USA first return to the Moon since Apollo 17 in 1972. IM-1 lander carried 6 NASA and 6 independent payloads to surface, landing near Malapert […]
Recognized proclamation to celebrate the first-ever imaged black hole M87* by Event Horizon Telescope collaboration involving Mauna Kea Observatories, given the Hawaiian name Pōwehi; imaged in April 2017 and released Apr 10, 2019.
Celebrating Yuri Gagarin, the 1st human to orbit Earth on Vostok 1 spacecraft in 1961; the flight lasted 108 minutes at 27,400 kph and 327 km above Earth.
Space telescope for NASA Explorers program, reaches 9th full year in space today, designed to search for exoplanets using the transit method in an area 400 times larger than that covered by Kepler / K2 mission; launched April 18, 2018.
NASA spacecraft with 2.4-meter diameter main telescope begins 38th year in space today, launched Apr 24, 1990; could continue operations until 2040s.
Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.
China Queqiao “bridge of magpies” satellite reaches 9 full years in space today, launched 2018 to provide far side communications to Earth from Chang'E-4 lander / rover.
Today marks 5th full year / starts 6th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on this day in 2022, beginning occupation.
New Year 1 Muharram (1st day) to begin at sunset on Jun 6; if young New Moon is not visible the beginning of the month and year may be delayed.
NASA, Cal-tech high-energy astrophysics satellite surpasses another year in space, having launched on this day in 2012.
NASA spacecraft reaches 18 full years in Moon orbit today; launched Jun 18, 2009, arrived at Moon 5 days later.
NASA ARTEMIS P1 craft surpasses another year in lunar orbit since 2011; it was 1 of 5 satellites launched 2007 to study Earth magnetosphere.
UN-Sanctioned annual, global asteroid awareness program supporting thousands of independently organized events, providing educational resources; held on June 30, the anniversary of the Tunguska event in 1908 when a meteor air burst levelled about 2,150 km² of forest in Siberia, Russia.
NASA ARTEMIS P2 craft surpasses another full year in lunar orbit since 2011; 1 of 5 satellites launched 2007 to study Earth magnetosphere
Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized / endorsed declaration by the United Nations since 2022.
First Human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil Armstrong and Lunar Module Pilot Buzz Aldrin; Command Module piloted by Michael Collins.
First USA spacecraft to successfully land on another planet commemorated today for its accomplishment 51 years ago; originally scheduled for July 4, landing was delayed until this day in 1976 due to rough landing site.
NASA spacecraft in extended mission phase reaches 28th full year of operations; instruments able to detect X-ray sources 100 times fainter than any previous X-ray telescope; launched 1999.
NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of the Sun on Dec 24, 2024 which is ~7 times closer than any prior spacecraft, traveling faster than any other human-made object at ~692,000 km/hr.
India orbiter surpasses another full year in lunar polar orbit since reaching the Moon in 2019; Chandrayaan-2 lander and rover were unsuccessful in lunar landing.
Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th country to land on Moon, and 1st near the Moon South Pole.
NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment and its variability.
Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having launched 2023.
NASA Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft surpasses another full year of operations in Mars orbit after insertion on this day 2014; continuing to study upper atmosphere.
Observed today is 1st planetary defense / asteroid deflection test success: NASA DART crashed into minor-planet moon Dimorphos of asteroid Didymos on this day in 2022, shortening Dimorphos’ orbital period.
Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.
Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space mission Sputnik One launched by Soviet Union 1957; Oct 10 is 58th observation of Outer Space Treaty going into effect 1967.
First solar observatory for China known as CHASE or Xihe / 羲和 surpasses another full year in space since launching on this day via Long March 2D in 2021.
First solar observatory for China known as CHASE or Xihe / 羲和 surpasses another full year in space since launching on this day via Long March 2D in 2021.
NASA craft reaches 6 full years in Space, about mid-way through planned 12-year mission to encounter 11 different asteroids.
Detecting some of the most energetic radiation in space, ESA, NASA, Roscosmos spacecraft surpasses another year of operations in space, despite loss of its thrusters; launched 2002, expected to run out of fuel early 2020s and fall to Earth Feb 2029.
European Space Agency (ESA) and Roscosmos spacecraft surpasses another full year at Mars, launched 2016; craft continues collecting data on atmosphere, deployed Schiaparelli demonstration lander 19 Oct 2016 (unsuccessful).
NASA spacecraft mapping boundary between the Solar System and interstellar space surpasses another full year in space; launched on this day 2008.
European Space Agency / JAXA Mercury Planetary Orbiter (MPO) and Mercury Magnetospheric Orbiter (dubbed Mio ‘waterway or fairway’) surpasses another full year in space today, launched 2018; expected to reach Mercury polar orbit in Nov 2026 to map planet, investigate magnetosphere.
NASA spacecraft surpasses another full year in orbit around Mars today, holds record for longest-surviving continually active spacecraft in orbit around a planet other than Earth; launched 2001.
NASA craft imaging Sun and solar phenomena surpasses another full year in space today; launched 2006.
Today marks another full year of continuous Human occupation of ISS; first component Zarya launched Nov 20, 1998, occupation began Nov 2, 2000.
NASA 12-U CubeSat Capstone acting as a pathfinder for planned International Lunar Gateway surpasses another year around Moon today; launched in 2022.
Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of operations in space today, launched in 2004.
European Space Agency (ESA) / National Aeronautics and Space Administration (NASA) craft studying sun, surpasses another full year of operations in space today, launched 1995; discovered more than 3,000 comets.
Japan Aerospace Exploration Agency (JAXA) Hayabusa surpasses another full year in space today; launched Dec 3, 2014, returned samples to Earth in 2020, and now in extended mission to flyby asteroid 98943 Torifune in 2026 and rendezvous with 1998 KY26 in 2031.
European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black holes, mapping dark matter, surpasses next full year in space today, launched 1999.
NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched 2009, went into hibernation February 17, 2011 and reactivated August 21, 2013.
China National Space Administration (CNSA) spacecraft at Guang Han Gong "Moon Palace", Sinus Iridum / Mare Imbrium, 44.12°N 19.51°W, surpasses another full year on Moon surface, landed 2013.
Surpassing 5th full year / entering 6th year in lunar orbit, Korea Aerospace Research Institute (KARI) first lunar spacecraft Danuri launched in Aug 2022 and reached Moon in Dec 2022.
ESA spacecraft surpasses another full year in space today; now in extended mission phase working to map more than 1 billion stars; launched in 2013.
ESA spacecraft surpasses next full year in Mars orbit today; will continue to study Mars atmosphere & climate, planet structure, mineralogy, geology, and to search for traces of water; launched June 2, 2003 and arrived at Mars in Dec 2003.
NASA (STSci) / ESA / CSA infrared astronomy telescope surpasses next full year in space since launching on this day via Ariane 5 ECA rocket in 2021.
Lunar New Year 2028 Spring Festival marks the Year of the Monkey.
Increasing space awareness and education, remembrances and events honor three Apollo 1 crew members lost in 1967 during a launch pad test: Command Pilot Virgil “Gus” Grissom, Senior Pilot Edward H. White and Pilot Roger B. Chaffee.
Educational and ceremonial events held worldwide to advance space technology / education and honor 7 crew members killed in Shuttle accident 28 January 1986: Commander Francis R. “Dick” Scobee, Pilot Michael J. Smith, Astronaut Christa McAuliffe (the 1st ‘Teacher in Space’), Mission Specialists Ellison S. Onizuka, Judith A. Resnick and […]
American Artemis Return to the Moon For Good is underway, Mars attention and planning advancing, Outer Solar System search for life ongoing, and Interstellar craft on outgoing trajectories while first USA satellite launch on this day in 1958 ‘Explorer 1’ is celebrated and remembered.
Annual international conferences and events take place to further space exploration efforts in remembrance of Columbia 7 loss in 2003: Commander Richard D. Husband, Mission Specialist Laurel Clark, Payload Specialist Ilan Ramon (the ‘1st Israeli astronaut’) and Astronauts: William C. McCool, Michael P. Anderson, David M. Brown and Kalpana Chawla […]
China Tianwen-1 orbiter reaches 7 full years of operations in Mars orbit; Lander & Rover touched down ~3 months after this date at Utopia Planitia 25.1°N, 109.9°E; launched July 2020, reached orbit 2021.
Fourth annual observation of 1st successful commercial lunar landing on Moon by Intuitive Machines and its IM-1 Nova-C Lander "Odysseus". This mission also marks the USA first return to the Moon since Apollo 17 in 1972. IM-1 lander carried 6 NASA and 6 independent payloads to surface, landing near Malapert […]
Recognized proclamation to celebrate the first-ever imaged black hole M87* by Event Horizon Telescope collaboration involving Mauna Kea Observatories, given the Hawaiian name Pōwehi; imaged in April 2017 and released Apr 10, 2019.
Celebrating Yuri Gagarin, the 1st human to orbit Earth on Vostok 1 spacecraft in 1961; the flight lasted 108 minutes at 27,400 kph and 327 km above Earth.
NASA spacecraft with 2.4-meter diameter main telescope launched Apr 24, 1990; could continue operations until 2040s.
Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.
Today marks 6th full year / starts 7th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on this day in 2022, beginning occupation.
NASA spacecraft reaches 19 full years in Moon orbit today; launched Jun 18, 2009, arrived at Moon 5 days later.
NASA ARTEMIS P1 craft surpasses another year in lunar orbit since 2011; it was 1 of 5 satellites launched 2007 to study Earth magnetosphere.
UN-Sanctioned annual, global asteroid awareness program supporting thousands of independently organized events, providing educational resources; held on June 30, the anniversary of the Tunguska event in 1908 when a meteor air burst levelled about 2,150 km² of forest in Siberia, Russia.
NASA ARTEMIS P2 craft surpasses another full year in lunar orbit since 2011; 1 of 5 satellites launched 2007 to study Earth magnetosphere
Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized / endorsed declaration by the United Nations since 2022.
First Human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil Armstrong and Lunar Module Pilot Buzz Aldrin; Command Module piloted by Michael Collins.
First USA spacecraft to successfully land on another planet commemorated today for its accomplishment 52 years ago; originally scheduled for July 4, landing was delayed until this day in 1976 due to rough landing site.
NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of the Sun on Dec 24, 2024 which is ~7 times closer than any prior spacecraft, traveling faster than any other human-made object at ~692,000 km/hr.
Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th country to land on Moon, and 1st near the Moon South Pole.
NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment and its variability.
Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having launched 2023.
NASA Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft surpasses another full year of operations in Mars orbit after insertion on this day 2014; continuing to study upper atmosphere.
Observed today is 1st planetary defense / asteroid deflection test success: NASA DART crashed into minor-planet moon Dimorphos of asteroid Didymos on this day in 2022, shortening Dimorphos’ orbital period.
Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.
Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space mission Sputnik One launched by Soviet Union 1957; Oct 10 is 58th observation of Outer Space Treaty going into effect 1967.
Detecting some of the most energetic radiation in space, ESA, NASA, Roscosmos spacecraft surpasses another year of operations in space, despite loss of its thrusters; launched 2002, instruments were officially powered down in February 2025, and planned reentry into Earth's atmosphere expected Feb 2029.
European Space Agency (ESA) and Roscosmos spacecraft surpasses another full year at Mars, launched 2016; craft continues collecting data on atmosphere, deployed Schiaparelli demonstration lander 19 Oct 2016 (unsuccessful).
NASA spacecraft mapping boundary between the Solar System and interstellar space surpasses another full year in space; launched on this day 2008.
European Space Agency / JAXA Mercury Planetary Orbiter (MPO) and Mercury Magnetospheric Orbiter (dubbed Mio ‘waterway or fairway’) surpasses another full year in space today, launched 2018; expected to reach Mercury polar orbit in Nov 2026 to map planet, investigate magnetosphere.
NASA spacecraft surpasses another full year in orbit around Mars today, holds record for longest-surviving continually active spacecraft in orbit around a planet other than Earth; launched 2001.
NASA craft imaging Sun and solar phenomena surpasses another full year in space today; launched 2006.
Today marks another full year of continuous Human occupation of ISS; first component Zarya launched Nov 20, 1998, occupation began Nov 2, 2000.
NASA 12-U CubeSat Capstone acting as a pathfinder for planned International Lunar Gateway surpasses another year around Moon today; launched in 2022.
Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of operations in space today, launched in 2004.
European Space Agency (ESA) / National Aeronautics and Space Administration (NASA) craft studying sun, surpasses another full year of operations in space today, launched 1995; discovered more than 3,000 comets.
Japan Aerospace Exploration Agency (JAXA) Hayabusa surpasses another full year in space today; launched Dec 3, 2014, returned samples to Earth in 2020, and now in extended mission to flyby asteroid 98943 Torifune in 2026 and rendezvous with 1998 KY26 in 2031.
European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black holes, mapping dark matter, surpasses next full year in space today, launched 1999.
NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched 2009, went into hibernation February 17, 2011 and reactivated August 21, 2013.
China National Space Administration (CNSA) spacecraft at Guang Han Gong "Moon Palace", Sinus Iridum / Mare Imbrium, 44.12°N 19.51°W, surpasses another full year on Moon surface, landed 2013.
ESA spacecraft surpasses another full year in space today; now in extended mission phase working to map more than 1 billion stars; launched in 2013.
ESA spacecraft surpasses next full year in Mars orbit today; will continue to study Mars atmosphere & climate, planet structure, mineralogy, geology, and to search for traces of water; launched June 2, 2003 and arrived at Mars in Dec 2003.
NASA (STSci) / ESA / CSA-ASC infrared astronomy telescope surpasses next full year in space since launching on this day via Ariane 5 ECA rocket in 2021.
Increasing space awareness and education, remembrances and events honor three Apollo 1 crew members lost in 1967 during a launch pad test: Command Pilot Virgil “Gus” Grissom, Senior Pilot Edward H. White and Pilot Roger B. Chaffee.
Educational and ceremonial events held worldwide to advance space technology / education and honor 7 crew members killed in Shuttle accident 28 January 1986: Commander Francis R. “Dick” Scobee, Pilot Michael J. Smith, Astronaut Christa McAuliffe (the 1st ‘Teacher in Space’), Mission Specialists Ellison S. Onizuka, Judith A. Resnick and […]
Annual international conferences and events take place to further space exploration efforts in remembrance of Columbia 7 loss in 2003: Commander Richard D. Husband, Mission Specialist Laurel Clark, Payload Specialist Ilan Ramon (the ‘1st Israeli astronaut’) and Astronauts: William C. McCool, Michael P. Anderson, David M. Brown and Kalpana Chawla […]
Lunar New Year 2029 Spring Festival marks the Year of the Rooster.
NET Apr — European Space Agency / JAXA Mercury Magnetospheric Orbiter (BepiColombo) end of extended mission, 9.98 Mercury years after orbit insertion; potential extension of mission or de-orbit plans TBD.
Recognized proclamation to celebrate the first-ever imaged black hole M87* by Event Horizon Telescope collaboration involving Mauna Kea Observatories, given the Hawaiian name Pōwehi; imaged in April 2017 and released Apr 10, 2019.
Celebrating Yuri Gagarin, the 1st human to orbit Earth on Vostok 1 spacecraft in 1961; the flight lasted 108 minutes at 27,400 kph and 327 km above Earth.
Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.
Today marks 7th full year / starts 8th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on this day in 2022, beginning occupation.
NASA ARTEMIS P1 craft surpasses another year in lunar orbit since 2011; it was 1 of 5 satellites launched 2007 to study Earth magnetosphere.
NASA ARTEMIS P2 craft surpasses another full year in lunar orbit since 2011; 1 of 5 satellites launched 2007 to study Earth magnetosphere
First human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil Armstrong and Lunar Module Pilot Buzz Aldrin; Command Module piloted by Michael Collins.
First USA spacecraft to successfully land on another planet commemorated today for its accomplishment 53 years ago; originally scheduled for July 4, landing was delayed until this day in 1976 due to rough landing site.
Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized / endorsed declaration by the United Nations since 2022.
NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of the Sun on Dec 24, 2024 which is ~7 times closer than any prior spacecraft, traveling faster than any other human-made object at ~692,000 km/hr.
Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th country to land on Moon, and 1st near the Moon South Pole.
NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment and its variability.
Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having launched 2023.
NASA Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft surpasses another full year of operations in Mars orbit after insertion on this day 2014; continuing to study upper atmosphere.
Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.
Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space mission Sputnik One launched by Soviet Union 1957; Oct 10 is 58th observation of Outer Space Treaty going into effect 1967.
NASA spacecraft mapping boundary between the Solar System and interstellar space surpasses another full year in space; launched on this day 2008.
European Space Agency (ESA) and Roscosmos spacecraft surpasses another full year at Mars, launched 2016; craft continues collecting data on atmosphere, deployed Schiaparelli demonstration lander 19 Oct 2016 (unsuccessful).
European Space Agency / JAXA Mercury Planetary Orbiter (MPO) and Mercury Magnetospheric Orbiter (dubbed Mio ‘waterway or fairway’) surpasses another full year in space today, launched 2018; expected to reach Mercury polar orbit in Nov 2026 to map planet, investigate magnetosphere.
NASA spacecraft surpasses another full year in orbit around Mars today, holds record for longest-surviving continually active spacecraft in orbit around a planet other than Earth; launched 2001.
NASA craft imaging Sun and solar phenomena surpasses another full year in space today; launched 2006.
Today marks another full year of continuous Human occupation of ISS; first component Zarya launched Nov 20, 1998, occupation began Nov 2, 2000.
NASA 12-U CubeSat Capstone acting as a pathfinder for planned International Lunar Gateway surpasses another year around Moon today; launched in 2022.
Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of operations in space today, launched in 2004.
European Space Agency (ESA) / National Aeronautics and Space Administration (NASA) craft studying sun, surpasses another full year of operations in space today, launched 1995; discovered more than 3,000 comets.
Japan Aerospace Exploration Agency (JAXA) Hayabusa surpasses another full year in space today; launched Dec 3, 2014, returned samples to Earth in 2020, and now in extended mission to flyby asteroid 98943 Torifune in 2026 and rendezvous with 1998 KY26 in 2031.
European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black holes, mapping dark matter, surpasses next full year in space today, launched 1999.
China National Space Administration (CNSA) spacecraft at Guang Han Gong "Moon Palace", Sinus Iridum / Mare Imbrium, 44.12°N 19.51°W, surpasses another full year on Moon surface, landed 2013.
NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched 2009, went into hibernation February 17, 2011 and reactivated August 21, 2013.
ESA spacecraft surpasses another full year in space today; now in extended mission phase working to map more than 1 billion stars; launched in 2013.
ESA spacecraft surpasses next full year in Mars orbit today; will continue to study Mars atmosphere & climate, planet structure, mineralogy, geology, and to search for traces of water; launched June 2, 2003 and arrived at Mars in Dec 2003.
NASA (STSci) / ESA / CSA infrared astronomy telescope surpasses next full year in space since launching on this day via Ariane 5 ECA rocket in 2021.
Recognized proclamation to celebrate the first-ever imaged black hole M87* by Event Horizon Telescope collaboration involving Mauna Kea Observatories, given the Hawaiian name Pōwehi; imaged in April 2017 and released Apr 10, 2019.
Celebrating Yuri Gagarin, the 1st human to orbit Earth on Vostok 1 spacecraft in 1961; the flight lasted 108 minutes at 27,400 kph and 327 km above Earth.
Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.
Today marks 8th full year / starts 9th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on this day in 2022, beginning occupation.
NASA ARTEMIS P1 craft surpasses another year in lunar orbit since 2011; it was 1 of 5 satellites launched 2007 to study Earth magnetosphere.
NASA ARTEMIS P2 craft surpasses another full year in lunar orbit since 2011; 1 of 5 satellites launched 2007 to study Earth magnetosphere
First USA spacecraft to successfully land on another planet commemorated today for its accomplishment 54 years ago; originally scheduled for July 4, landing was delayed until this day in 1976 due to rough landing site.
Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized / endorsed declaration by the United Nations since 2022.
NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of the Sun on Dec 24, 2024 which is ~7 times closer than any prior spacecraft, traveling faster than any other human-made object at ~692,000 km/hr.
Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th country to land on Moon, and 1st near the Moon South Pole.
NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment and its variability.
Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having launched 2023.
NASA Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft surpasses another full year of operations in Mars orbit after insertion on this day 2014; continuing to study upper atmosphere.
Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.
NASA spacecraft mapping boundary between the Solar System and interstellar space surpasses another full year in space; launched on this day 2008.
European Space Agency / JAXA Mercury Planetary Orbiter (MPO) and Mercury Magnetospheric Orbiter (dubbed Mio ‘waterway or fairway’) surpasses another full year in space today, launched 2018; expected to reach Mercury polar orbit in Nov 2026 to map planet, investigate magnetosphere.