They also orbit near their stars, in many cases closer than Mercury is to the Sun. Our solar system, in contrast, appears to be different. “[Planetary scientists] have thought our solar system ...

Sub-Neptune planets that are smaller than Neptune in size are the most common type of planet known to exist in the Milky Way, but they are absent from the solar system. They have atmospheres that ...

Given what we know about the star they orbit ... The HR 8799 system, a mere 30 million years old, is a cosmic youngster compared to our 4.6 billion-year-old solar system. Its planets, still ...

(NewsNation) — NASA’s two astronauts are back on Earth with SpaceX on Tuesday after a dramatic marathon mission that began with a troubled Boeing test flight more than nine months ago. Butch Wilmore ...

Anna Marie Brennan does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...

Two NASA astronauts stuck in orbit for nine months finally returned to Earth in a SpaceX craft, capping a saga that captured international attention and deepened America’s reliance on the Elon ...

On June 27, a defunct Russian satellite broke apart in orbit, sending debris toward the ISS and forcing Williams and Wilmore, along with the other seven astronauts on board at the time, to take ...

The first satellite of the Google-backed FireSat constellation successfully made it to orbit over the weekend, kicking off what promises to be a new era in wildfire detection and monitoring.

The James Webb Space Telescope has directly observed the key chemical of carbon dioxide in planets outside of our solar system for the first time, scientists announced Monday. The gas giants are ...

New technology could help fight wildfires on the ground, from space. NBC News’ Steve Patterson reports on the new satellites that will work to detect wildfires early on. March 17, 2025 ...

The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799 ... know about the star they orbit, that likely indicates ...