Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...

Scientists have been unable to determine whether the dwarf planet’s organics were produced by its own chemical processes or ...

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 ...

Pluto isn't alone—it's part of the Kuiper Belt with possibly hundreds of other planet-sized objects. Because Pluto hasn't achieved gravitational dominance in its region, the International Astronomical ...

Explore the impact of stellar flares on the potential for alien life. Discover how higher levels of UV radiation can both ...

The asteroid Bennu has provided groundbreaking insights into the chemistry that may have set the stage for life in the early ...

Data from the Gaia spacecraft shows that even unassuming stars can host monumental companions like massive planets.

Gaia-4b is considered a super-Jupiter planet, a relatively cold gas giant, orbiting its star over 570 Earth-days. That star ...

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

Using data from the European Space Agency's Gaia mission, scientists have found a huge exoplanet and a brown dwarf. This is the first time a planet has been uniquely discovered by Gaia's ability to ...

An LSU-led team would like to use a high-flying Antarctic balloon-borne infrared telescope to detect the chemical makeup of ...