A new model has been developed to simulate interstellar activity within our solar system and the nearby Alpha Centauri system. Interstellar material has been found within our solar system, but ...

A mysterious object has just entered our solar system—and scientists don’t know what it is. With an unusual trajectory and ...

Combining with one other previously confirmed planet, one of our closest stellar neighbors now has a family of four.

One part of this plan would require increasing the planet’s atmospheric pressure, and one scientist suggests that capturing ...

NASA is closely monitoring a building-sized asteroid as it makes its closest approach to Earth today, among a group of five ...

Astronomers have peered back in time to find what looks like a population of 'hidden' galaxies that could hold the key to unlocking some of the universe's secrets. If their existence is confirmed it ...

These icy bodies contain organic molecules — and don’t fall into any known category of celestial object we’ve seen before.

What can exozodiacal dust, also called exozodi, teach astronomers about identifying Earth-like exoplanets? This is what a ...

The NASA/ESA Solar Orbiter recently recorded the highest-ever concentration of a rare helium isotope (3He) emitted from the Sun. A Southwest Research Institute-led team of scientists sought the source ...

A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from ...

Pluto isn’t the only dwarf planet in our solar system's outer reaches. Now is an ideal time to look for the egg-shaped Haumea ...

One of the great things about astronomy is that it's full of surprises, especially when it comes to comets — you just can't predict when a new one might pop up. But when one does appear, it gets both ...