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First space walk/extra-vehicular activity (Alexei Leonov). USSR Voskhod 2: March 1965: First crewed spacecraft to change orbit. USA (NASA) Gemini 3: 14 July 1965: First flyby of Mars (returned pictures). USA (NASA) Mariner 4 [17] 14 July 1965: First photographs of another planet from deep space . USA (NASA) Mariner 4 [17] 15 December 1965
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 ...
Discovery and exploration of the Solar System; Human presence in space; List of missions to the Moon; List of missions to Venus; List of missions to Mars; List of Solar System probes; List of interplanetary voyages; List of space telescopes; New Frontiers program; Out of the Cradle – 1984 book about scientific speculation on future missions ...
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 ...
New images from the Euclid space telescope are published, including a view of the Messier 78 star nursery. [304] Astronomers using TESS report the discovery of Gliese 12 b, a Venus-sized exoplanet located 40 light-years away, with an equilibrium temperature of 315 K (42 °C; 107 °F). This makes it the nearest, transiting, temperate, Earth ...
On 13 October 2024, SpaceX achieves the first successful return and capture of a Super Heavy booster from Starship, the biggest and most powerful rocket ever to fly. [18] [19] On 14 October 2024, NASA launched the Europa Clipper on 14 October 2024, which will study the Jovian moon Europa while in orbit around Jupiter.
Most notably, scientists detected a "chirp" from gravitational waves produced by a collision between two black holes. Hypothesized by physicist Albert Einstein a century ago, this is a landmark ...
The principal change was to space leap years differently so as to make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's revolution around the Sun. The reform advanced the date by 10 days: Thursday 4 October 1582 was followed by Friday 15 ...