... Earth years. If a planet of that size is orbiting the sun beyond Neptune, it will affect the orbits of nearby objects. The planet appears to have an elliptical orbit and the closest it comes to the sun is about two hundred and fifty astronomical...
..., and it whizzes round its host star once every 14.4 days. All of the planets in the Kepler-90 system are closer to their central star than the Earth is to the Sun. Because Kepler-90i orbits so close to its host star, its average...
... this 300 kilometre wide object was discovered about 80 AU from the Sun; an astronomical unit is the mean distance from the centre of the earth to the centre of the sun - so around 149.6 million kilometres. Neptune for comparison is 30 AU away, which...
... to find their previous positions, Namouni and Morais found these objects were orbiting the Sun on a plane perpendicular to the planetary motion going on at the time of the Solar System’s formation. Not only that but they were located far from...
... 24 "superhabitable" exoplanets that are potentially better than our own. As a warm, temperate world at a favourable distance from the Sun, and with an abundance of liquid water on its surface, Earth is a planet like no other that we know of so far...
...spacecraft, and this is the source of ion propulsion’s extraordinary efficacy. North is at the top of this figure and the sun is far to the left. Ceres orbital motion around the sun carries it straight into the figure. The original approach took Dawn...