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A hypothetical planet-sized Earth trojan the size of Mars, given the name Theia, is thought by proponents of the giant-impact hypothesis to be the origin of the Moon.The hypothesis states that the Moon formed after Earth and Theia collided, [10] showering material from the two planets into space.
Asteroids in the L 4 and L 5 Sun–Mars Lagrangian points are sometimes called Mars trojans, with a lower-case t, as "Trojan asteroid" was originally defined as a term for Lagrangian asteroids of Jupiter. They may also be called Mars Lagrangian asteroids.
In astronomy, a trojan is a small celestial body (mostly asteroids) that shares the orbit of a larger body, remaining in a stable orbit approximately 60° ahead of or behind the main body near one of its Lagrangian points L 4 and L 5. Trojans can share the orbits of planets or of large moons. Trojans are one type of co-orbital object.
Asteroids in the leading (L 4) orbit are named after Greek heroes (the "Greek node or camp" or "Achilles group"), and those at the trailing (L 5) orbit are named after the heroes of Troy (the "Trojan node or camp"). [2] The asteroids 617 Patroclus and 624 Hektor were named before the Greece/Troy rule was devised, resulting in a "Greek spy ...
NASA has blasted a spacecraft, traveling at speeds up to 92,000 mph, to the most mysterious asteroids in our solar system.Called the Trojan asteroids, they are trapped in two swarms — one in ...
In some ways these asteroids look similar to the near-Earth asteroid ... including a close encounter with another main belt asteroid called Donaldjohanson in 2025. ... There are about 7,000 Trojan ...
Astronomers spotted a possible “sibling” planet that shares the orbit of another exoplanet in a system located 370 light-years away.
2010 TK 7 was at the near-Earth end of its tadpole in 2010–2011, [4] which facilitated its discovery. 2010 TK 7 's orbit has a chaotic character, making long-range predictions difficult. Prior to 500 AD, it may have been oscillating about the L 5 Lagrangian point (60 degrees behind Earth), before jumping to L 4 via L 3 .