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PRODID:-//Space Calendar - ECPv6.17.2//NONSGML v1.0//EN
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METHOD:PUBLISH
X-WR-CALNAME:Space Calendar
X-ORIGINAL-URL:https://spacecalendar.com
X-WR-CALDESC:Events for Space Calendar
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
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BEGIN:VTIMEZONE
TZID:Pacific/Honolulu
BEGIN:STANDARD
TZOFFSETFROM:-1000
TZOFFSETTO:-1000
TZNAME:HST
DTSTART:20270101T000000
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20281004
DTEND;VALUE=DATE:20281005
DTSTAMP:20260810T224103Z
CREATED:20260810T224041Z
LAST-MODIFIED:20260810T224103Z
UID:10001430-1854230400-1854316799@spacecalendar.com
SUMMARY:71st Anniversary: First-Ever Satellite Launched to Space (Sputnik 1)
DESCRIPTION:In 1957 the Soviet Union launched the Sputnik 1 mission which became the first artificial Earth satellite and launched humankind into the Space Age. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October. \n\n\n\nSize and Weight: It was a metal sphere about 23 inches (58 cm) wide\, roughly the size of a beach ball\, and weighed 184 pounds (83.6 kg).\n\n\n\n\nOrbit Time: It took about 96 to 98 minutes to complete one full trip around the Earth.\n\n\n\n\nMission: It sent simple radio beep signals back to Earth for three weeks before its batteries died.\n\n\n\n\nEnd of Life: It stayed in orbit for three months and burned up when it fell back into Earth’s atmosphere on January 4\, 1958.
URL:https://spacecalendar.com/event/71st-anniversary-first-ever-satellite-launched-to-space-sputnik-1/
LOCATION:Worldwide
CATEGORIES:Observation / Anniversary
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20281004
DTEND;VALUE=DATE:20281011
DTSTAMP:20260810T221108Z
CREATED:20251024T200718Z
LAST-MODIFIED:20260810T221108Z
UID:10000392-1854230400-1854835199@spacecalendar.com
SUMMARY:World Space Week
DESCRIPTION:Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 71st observation of 1st Space mission Sputnik One launched by Soviet Union 1957; Oct 10 is 61st observation of Outer Space Treaty going into effect 1967.
URL:https://spacecalendar.com/event/world-space-week-5/
LOCATION:Worldwide
CATEGORIES:Meeting / Conference / Symposium
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20281010
DTEND;VALUE=DATE:20281011
DTSTAMP:20260810T225222Z
CREATED:20260810T225222Z
LAST-MODIFIED:20260810T225222Z
UID:10001434-1854748800-1854835199@spacecalendar.com
SUMMARY:61st Anniversary of the Outer Space Treaty
DESCRIPTION:On October 10\, 1967 the Outer Space Treaty went into effect – establishing the foundational legal framework for international space law and peaceful exploration. \nKey Rules of the Treaty:\n\n\nNo Weapons of Mass Destruction: Bans placing nuclear weapons or other destructive weapons in Earth’s orbit or on celestial bodies.\n\n\n\n\nPeaceful Use Only: Limits the use of the Moon and other space bodies strictly to peaceful purposes.\n\n\n\n\nNo Territorial Claims: Prohibits any nation from claiming sovereignty or ownership over space or celestial bodies.\n\n\n\n\nGlobal Benefit: Declares that space exploration should be carried out for the benefit of all countries and humanity.
URL:https://spacecalendar.com/event/61st-anniversary-of-the-outer-space-treaty/
LOCATION:Global / Inter-Global
CATEGORIES:Observation / Anniversary
ATTACH;FMTTYPE=image/jpeg:https://spacecalendar.com/wp-content/uploads/2026/08/Outer-Space-Treaty.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20281017
DTEND;VALUE=DATE:20281018
DTSTAMP:20260730T201239Z
CREATED:20251024T200717Z
LAST-MODIFIED:20260730T201239Z
UID:10000387-1855353600-1855439999@spacecalendar.com
SUMMARY:26 Years in Space: INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL)
DESCRIPTION: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.
URL:https://spacecalendar.com/event/international-gamma-ray-astrophysics-laboratory-integral-4/
LOCATION:Low Earth Orbit (LEO)
CATEGORIES:Observation / Anniversary
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20281019
DTEND;VALUE=DATE:20281020
DTSTAMP:20260730T201239Z
CREATED:20251024T200717Z
LAST-MODIFIED:20260730T201239Z
UID:10000382-1855526400-1855612799@spacecalendar.com
SUMMARY:20 Years in Space: Interstellar Boundary Explorer (IBEX)
DESCRIPTION:NASA spacecraft mapping boundary between the Solar System and interstellar space surpasses another full year in space; launched on this day 2008.
URL:https://spacecalendar.com/event/interstellar-boundary-explorer-ibex-begins-next-year-in-space-4/
LOCATION:High Earth Orbit (HEO)
CATEGORIES:Observation / Anniversary
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20281019
DTEND;VALUE=DATE:20281020
DTSTAMP:20260730T201239Z
CREATED:20251024T200717Z
LAST-MODIFIED:20260730T201239Z
UID:10000384-1855526400-1855612799@spacecalendar.com
SUMMARY:12 Years at Mars: ExoMars 2016 Orbiter
DESCRIPTION: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).
URL:https://spacecalendar.com/event/exomars-2016-orbiter-begins-next-year-in-mars-orbit-4/
LOCATION:Mars Orbit
CATEGORIES:Observation / Anniversary
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20281020
DTEND;VALUE=DATE:20281021
DTSTAMP:20260730T201239Z
CREATED:20251024T200717Z
LAST-MODIFIED:20260730T201239Z
UID:10000380-1855612800-1855699199@spacecalendar.com
SUMMARY:10 Years in Space: BepiColombo (Mercury Planetary Orbiter and Mercury Magnetospheric Orbiter)
DESCRIPTION: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.
URL:https://spacecalendar.com/event/bepicolombo-mercury-planetary-orbiter-and-mercury-magnetospheric-orbiter-begins-next-year-in-space-4/
LOCATION:Mercury Trajectory
CATEGORIES:Observation / Anniversary
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20281024
DTEND;VALUE=DATE:20281025
DTSTAMP:20260730T201239Z
CREATED:20251024T200717Z
LAST-MODIFIED:20260730T201239Z
UID:10000378-1855958400-1856044799@spacecalendar.com
SUMMARY:27 Years in Mars Orbit: Mars Odyssey
DESCRIPTION: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.
URL:https://spacecalendar.com/event/mars-odyssey-begins-next-year-in-mars-orbit-4/
LOCATION:Mars Orbit
CATEGORIES:Observation / Anniversary
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20281026
DTEND;VALUE=DATE:20281027
DTSTAMP:20260730T201239Z
CREATED:20251024T200717Z
LAST-MODIFIED:20260730T201239Z
UID:10000376-1856131200-1856217599@spacecalendar.com
SUMMARY:22 Years in Space: Solar Terrestrial Relations Observatory (STEREO A & B)
DESCRIPTION:NASA craft imaging Sun and solar phenomena surpasses another full year in space today; launched 2006.
URL:https://spacecalendar.com/event/solar-terrestrial-relations-observatory-stereo-a-b-mark-another-year-in-space-4/
LOCATION:Heliocentric Orbit
CATEGORIES:Observation / Anniversary
END:VEVENT
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