Low Earth Orbit (LEO)

European Space Agency (ESA) craft surpasses 26 full years / begins 27th year in space today, launched 1999, in very...

Surpassing 14 full years / starting 15th year in Space, the NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object...

NASA spacecraft with 2.4-meter diameter main telescope begins 37th year in space today, launched Apr 24, 1990; could continue operations...

Today marks 4th full year / starts 5th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on...

NASA, Cal-tech high-energy astrophysics satellite surpasses another year in space, having launched on this day in 2012.

NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment...

Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having...

Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.

Detecting some of the most energetic radiation in space, ESA, NASA, Roscosmos spacecraft surpasses another year of operations in space,...

Today marks another full year of continuous Human occupation of ISS; first component Zarya launched Nov 20, 1998, occupation began...

Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of...

European Space Agency (ESA) / National Aeronautics and Space Administration (NASA) craft studying sun, surpasses another full year of operations...

European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black...

NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched...

NASA spacecraft with 2.4-meter diameter main telescope begins 38th year in space today, launched Apr 24, 1990; could continue operations...

Today marks 5th full year / starts 6th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on...

NASA, Cal-tech high-energy astrophysics satellite surpasses another year in space, having launched on this day in 2012.

NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment...

Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having...

Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.

Detecting some of the most energetic radiation in space, ESA, NASA, Roscosmos spacecraft surpasses another year of operations in space,...

Today marks another full year of continuous Human occupation of ISS; first component Zarya launched Nov 20, 1998, occupation began...

Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of...

European Space Agency (ESA) / National Aeronautics and Space Administration (NASA) craft studying sun, surpasses another full year of operations...

European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black...

NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched...

NASA spacecraft with 2.4-meter diameter main telescope begins 39th year in space today, launched Apr 24, 1990; could continue operations...

Today marks 6th full year / starts 7th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on...

NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment...

Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having...

Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.

Detecting some of the most energetic radiation in space, ESA, NASA, Roscosmos spacecraft surpasses another year of operations in space,...

Today marks another full year of continuous Human occupation of ISS; first component Zarya launched Nov 20, 1998, occupation began...

Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of...

European Space Agency (ESA) / National Aeronautics and Space Administration (NASA) craft studying sun, surpasses another full year of operations...

European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black...

NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched...

Today marks 7th full year / starts 8th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on...

NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment...

Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having...

Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.

Today marks another full year of continuous Human occupation of ISS; first component Zarya launched Nov 20, 1998, occupation began...

Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of...

European Space Agency (ESA) / National Aeronautics and Space Administration (NASA) craft studying sun, surpasses another full year of operations...

European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black...

NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched...

Today marks 8th full year / starts 9th year of continuous Human occupation of TSS; Shenzhou 14 three-member crew launched on...

NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment...

Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having...

Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.

Today marks 10th full year / starts 11th year of continuous Human occupation of Tiangong Space Station; Shenzhou 14 three-member...