A new record was set for the largest number of humans in orbit (14) on 16 September 2021, [9] and a new record for the largest number of humans in space (19) at one time (10 in the ISS, 3 on board the Tiangong Space Station, 6 on board New Shepard-19) was set on 11 December 2021.

It orbits Neptune in the retrograde direction at an average distance of over 50 million km (31 million mi) and takes about 27 Earth years to complete its orbit—the largest orbital distance and period of any known moon in the Solar System.

2022年1月6日 · The smallest rocket launched in 2021 was Astra’s Rocket 3.3, and the largest rocket launched was ULA’s Delta 4 Heavy. From the 133 successful launches, the most ever in a year, 27 humans were put into orbit as well as 1,778 spacecraft and satellites. Additionally, 16,675kg of cargo was sent to the ISS.

2021 PH27 orbits the Sun at a distance of 0.13–0.79 AU once every 4 months (114 days; semi-major axis of 0.46 AU). Its orbit has an eccentricity of 0.71 and an inclination of 32 degrees with respect to the ecliptic. [4] . It is classified as a near-Earth object (NEO) due its perihelion distance being less than 1.3 AU.

2021 PH27 is a small asteroid with an orbit that is entirely confined within Earth's orbit. NASA JPL has classified 2021 PH27 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2024年11月20日 · On a mission to “touch the Sun,” NASA's Parker Solar Probe became the first spacecraft to fly through the corona – the Sun’s upper atmosphere – in 2021. With every orbit, the probe faces brutal heat and radiation to provide humanity with unprecedented observations of the only star we can study up close.

2020年11月23日 · The phase and libration of the Moon for 2021, at hourly intervals. Includes music, supplemental graphics that display the Moon's orbit, subsolar and sub-Earth points, and the Moon's distance from Earth at true scale. Craters near the terminator are labeled, as are Apollo landing sites and maria and other albedo features in sunlight.

2020年11月17日 · Under the agreement, Orbit Fab’s first operational fuel depot, Tanker-001 Tenzing, will launch aboard a SpaceX Falcon 9 as early as June 2021. Tanker-001 Tenzing will store a green propellant...

Tianwen-1 ("questions to heaven," or "questioning the heavens") is China's first Mars mission, consisting of an orbiter and a rover named Zhurong. It entered Mars orbit in February 2021 and Zhurong landed on May 14, 2021. Among the rover’s science instruments is a radar that could detect pockets of water beneath the surface, which may contain life.

ORBIT is a real-world few-shot dataset and benchmark grounded in a real-world application of teachable object recognizers for people who are blind/low vision.