White dwarfs—the dense, fading cores left behind after stars like our sun die—are usually calm, cool, and ancient. Over ...

By combining the power of ground-based and space-based telescopes, astronomers have discovered a new brown dwarf—a type of ...

Planets do not emit visible light like stars; they shine in the sky because they reflect sunlight. Exoplanets too reflect starlight, and nobody does it better than LTT9779b. This world reflects 80 ...

Solving a lunar mystery? Scientist at the University of Arizona is the lead author on research proposing a new theory for the ...

Could Artemis III astronauts collect some lunar samples that shed light on the moon's mysterious past? That's what a team of ...

For almost a decade, astronomers have been searching for a ninth planet in the solar system. Recently, new evidence of ...

Since Pluto was relegated to dwarf planet status, almost everyone has agreed that there are eight planets in our solar system ...

A natural satellite is simply a celestial object that orbits a planet or a smaller body. Unlike the ones we build and send up ...

Planets that orbit white dwarf stars should be too hot to host alien life, theories suggest. But a new study accounting for ...

A study led by Howard Chen looks to explain what NASA space telescopes are missing in the search for life beyond Earth.

For all the talk about life across the cosmos, Earth remains the only confirmed example. That single data point makes your ...

Some habitable worlds orbiting dead stars could be kept alive for aeons thanks to a quirk of Einstein’s theory of gravity ...