In the distant reaches of the solar system are many icy objects that resemble snowmen. Now, a new study reveals the simple ...

In late 2025 a mysterious comet flew between the orbits of Earth and Mars and reached a speed of more than 150,000 miles per ...

Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar system.

Scientists at the European Space Agency used a laser to communicate with a spacecraft 165 million miles (265 million kilometers) away in deep space for the first time, marking a major step forward in ...

Moons may seem like quiet companions to the planets, but many of them are worlds every bit as fascinating as the planets themselves. Some are covered in oceans, some erupt with lava, and others hide ...

Space scientists have revealed a new image of the mysterious space rock that passed through our solar system. Researchers said the picture shows the interstellar Comet 3I/ATLAS, suggested to be a ...

No matter your areas of interest, it's likely your newsfeed, whichever one you may use, has been flooded recently with the opinions of so-called Harvard scientists that there's an alien spacecraft ...

In spring 2002, Chelsey Bryant Krug flew to Colorado in search of a job. She had just enrolled as a graduate student in aerospace engineering sciences at the University of Colorado Boulder. She found ...

On February 23, 1990, NASA's Pioneer 11 spacecraft left the solar system! This was the second spacecraft to travel beyond the planetary part of our solar system, which ends at Neptune's orbit. An ...