How big is the Sun compared to the Earth? Imagine you were able to shrink the Sun to the size of a basketball. At that point ...

A distant white dwarf hosts an Earth-like planet in an orbit that might be similar to Earth’s if it survives the Sun’s red giant phase.

A school-bus-sized asteroid will pass by Earth this Wednesday, November 13, 2024, coming closer than the moon.

A new study posits that our planet's gravity will cause seismic activity on Apophis when it makes its close approach in 2029.

Apophis, formally known as 99942 Apophis, is a near-Earth asteroid with an orbit that brings it within 1.3 times the distance ...

Proba-3 is such an ambitious mission that it needs more than one single spacecraft to succeed. In order for Proba-3's ...

Humanity's exploration of outer space continues to unveil astonishing discoveries that challenge our understanding of the ...

The final supermoon in a series of four will occur tonight—here are the best places in the U.S. to catch a glimpse.

Phobos is no slowpoke. Given its size, angle, and orbital pattern, the moon makes a full-circle around Mars roughly once every 7.6 hours. This frequency also makes it far more likely to pass in front ...

SpaceX’s massive Starship rocket has the potential to transform the commercial space economy, ensure America’s position as ...

Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...

The Arecibo message contained an image of a man only. But what might seem a sexist choice deserves a more subtle ...