Earth’s tilt is what causes the seasons; in the summer, when our planet’s pole is tipped toward the sun, the days are longer, ...

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

The discovery of the exoplanet, a super-Earth called Kepler-735c, is all down to something called transit timing variations, ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

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.

New research suggests that our entire solar system is vulnerable to being thrown into chaos by a distant star.

We should keep our eyes to the skies next week to catch a glimpse of the final full moon of spring in the Northern Hemisphere ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...