Total solar eclipses are not just incredible celestial events. They are also important scientific moments that allow ...

Astronomers have uncovered a distant celestial body that may be a new dwarf planet, orbiting the Sun from more than twice the distance of Pluto. Found by researchers at the Institute for Advanced ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

China lays foundation for cislunar infrastructure with spacecraft in novel lunar orbits China has sent several small ...

Despite the offset sunrise and sunset times, the summer solstice is still the longest day of the year in terms of total ...

Researchers believe that 2017 OF201s highly eccentric orbit points to a chaotic origin, possibly caused by a gravitational ...

A spacecraft's-eye view over the landscapes of Mars has just given us a first-of-its-kind glimpse of the giant, ancient ...

Summer will officially begin with this year's solstice on June 20. And on Wednesday, June 11, comes a "strawberry moon," the ...

Spacecraft that orbit around Earth do so in two types of orbits: circular and elliptical. In a circular orbit, the spacecraft is always at the same distance from the center of the Earth.