Harvesting solar energy in orbit and beaming it down to Earth is a decades-old idea. Now, a raft of companies say they could ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

"The national security establishment has already been doing this for five decades but thought that no one could replicate it, ...

Portal Space Systems, a Bothell-based startup, aims to harness the power of the sun to propel spacecraft, making it easier to ...

The widely talked about Comet 3I/ATLAS will pass by the sun on Thursday, but it will be December before stargazers can get a ...

The space object, named Chiron, is believed to be a piece of rock measuring a whopping 130 miles wide at its broadest point - ...

A coronal mass ejection on another star has been witnessed in its entirety for the first time, revealing that when these ...

The interstellar comet 3I/ATLAS has a thick irradiated crust that no longer resembles its home star system, simulations and ...

Astronomers are hustling to use interplanetary spacecraft to study the interstellar comet dubbed 3I/ATLAS while the sun is ...

As 3I/Atlas neared its closest point to the sun in its orbit, the internet was abuzz with curiosity about the comet.

While most scientists believe it’s a natural comet, one Harvard astronomer has suggested its unusual features could hint at ...

A peculiar interstellar visitor, 3I/ATLAS, is challenging comet theories with its sunward tail and unusual composition. While ...