A new gas giant world discovered by citizen scientists using data from NASA's exoplanet-hunting spacecraft TESS is cool, ...

We have discovered two interstellar objects so far, ’Oumuamua and Comet 2I/Borisov. ’Oumuamua had no dust tail and a ...

Astronomers from the University of New Mexico, along with U.S. and international researchers, have confirmed the existence of ...

Sedna will reach its closest approach to the Sun in 2076, providing a remarkable space-faring opportunity that won’t come ...

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.

Meteorological analyst Jean Suriel reported that this Thursday, July 3, the Earth reached its farthest point from the Sun in ...

For planets with more exaggerated eccentricities, the changing distance can have a bigger impact. Sunlight on Mars, for example, can vary as much as 31 percent along its orbit.

Because Earth moves in an elliptical orbit around the sun, being further away means it travels slower along its orbit. This ...

Pluto, too, has a very elliptical orbit that pushes its variations to an extreme, Byrne said. These two factors — a planet's tilt and the shape of its orbit — can also change over time.

For folks in the United States, July evenings mean 4th of July fireworks. While you're waiting for the show, be sure to watch ...

New research on the orbits of these mysterious asteroids near Venus stress the need for better space rock surveillance.