Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

The dwarf planet 1 Ceres is in conjunction with the Sun at 5 P.M. EST today. While this means we can't see Ceres for now, we ...

Planetarium features a number of star shows and laser concerts during March specially designed for children, at 118 Lamington ...

Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected ...

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

Why is Pluto no longer a planet? Discover the real reason behind Pluto’s reclassification as a dwarf planet and the science that led to this change.

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

Wolf 359’s extreme radiation and frequent X-ray flares make life-sustaining atmospheres on nearby planets highly unlikely, ...

Five of the brightest planets will be visible to the naked eye. With help, you may even spot Uranus and Neptune.

By tracing the corkscrew wobble of two stars as they move through the sky, the Gaia space mission has discovered one new ...

Uranus has the craziest tilt in your Solar System. Its tilt is about ninety-eight degrees. That means its north pole is ...

The ESA’s Gaia mission mapped the positions and velocities of stars with extreme precision by measuring about one billion ...