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south polar observations 1990-090B: 1995 north polar observations WIND: NASA: November 1994 – still active as of October 2024 [2] orbiter success solar wind measurements 1994-071A: SOHO: ESA/ NASA: May 1996 – extended to December 2025 [3] orbiter success investigation of Sun's core, corona, and solar wind; comet discoveries 1995-065A: ACE: NASA
Solar System space probes operational as of November 2024. This is a list of active space probes which have escaped Earth orbit. It includes lunar space probes, but does not include space probes orbiting at the Sun–Earth Lagrangian points (for these, see List of objects at Lagrangian points). A craft is deemed "active" if it is still able to ...
First polar orbit around the Sun. First mission to survey the space environment above and below the poles of the Sun. USA (NASA) ESA Ulysses [43] 13 September 1992: First spacecraft to map Venus in its entirety. USA (NASA) Magellan [44] 22 March 1995: Record longest duration spaceflight to date (437.7 day by Valeri Polyakov). Russia Mir: July 1995
All spacecraft that have left Earth orbit for the purposes of Solar System exploration (or were launched with that intention but failed), including lunar probes. A small number of pioneering or notable Earth-orbiting craft. [vague] It does not include: Centuries of terrestrial telescopic observation. The great majority of Earth-orbiting satellites.
Lunar lander. First spacecraft to do a soil analysis of any world. Returned more than 20,000 photos. [15] November 7 US: Surveyor 6: Atlas SLV-3 Agena-D Moon Success Lunar lander. First spacecraft to be launched from the surface of the Moon. It lifted itself to a height of about 3 meters. [16] November 29 Australia: WRESAT: Sparta: Earth: Success
An orbit will be Sun-synchronous when the precession rate ρ = dΩ / dt equals the mean motion of the Earth about the Sun n E, which is 360° per sidereal year (1.990 968 71 × 10 −7 rad/s), so we must set n E = ΔΩ E / T E = ρ = ΔΩ / T , where T E is the Earth orbital period, while T is the period of the spacecraft ...
A small asteroid will be pulled into orbit around the Earth as a “mini-moon” later this month before the space rock departs into other parts of the solar system.. The 10m-wide asteroid, dubbed ...
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...