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Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. [4] [2] Its gravitational effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth i.e. over 250 astronomical units (AU).
Irregular moons are probably minor planets that have been captured from surrounding space. Most irregular moons are less than 10 kilometres (6.2 mi) in diameter. The earliest published discovery of a moon other than Earth's was by Galileo Galilei, who discovered the four Galilean moons orbiting Jupiter in 1610. Over the following three ...
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 ...
The number of known planets in our solar system has risen and fallen over time. Astronomers, seeing odd irregularities in the orbits of the outer planets suspect another, unknown, planet may orbit ...
The Jupiter Icy Moons Explorer (JUICE) is set to take off today (14 April) after it was delayed yesterday (13 April) due to lightning warnings. Led by the European Space Agency, the mission will ...
Six planets will be in alignment during the planet parade: Mars, Jupiter, Uranus, Neptune, Venus, and Saturn. Uranus and Neptune won't appear as "bright planets," so you'll need a telescope or ...
Mars rover and helicopter drone; first powered flight on another planet [479] [480] [481] Chang'e 5: 23 November 2020 Lunar sample return [405] [482] Lucy: 16 October 2021 Flyby of six Jupiter trojans and two main belt asteroids [483] [484] DART / LICIACube: 24 November 2021 Asteroid 65803 Didymos flyby, asteroid moon Dimorphos impactor [485] [486]
For live updates on today’s launch, read our story here: Live updates: SpaceX ‘keeping an eye on upper-level winds’ ahead of Vandenberg launch A SpaceX rocket will launch from Vandenberg ...