The concept of Planet X, or Planet Nine, has captivated astronomers for decades. This hypothetical planet, theorized to be ...

A powerful new tool comes online this year that could help astronomers locate the mysterious planet hiding somewhere beyond ...

Images captured by NASA's Solar Dynamics Observatory have revealed that "coronal loops" give off subtle flashes of ...

The James Webb Space Telescope has revolutionized astronomy in just three years. A new project celebrates its impact on the ...

Flickering coronal "loops" on the Sun are warning signs of a coming solar eruption, paving the way for better space weather ...

Astronomers discover a network of cosmic tunnels linking our solar system to distant galaxies, revealing a dynamic and ...

Mars's atmosphere and climate are impacted by interactions with solar wind, a stream of plasma comprised of protons and ...

Planets around other stars need to be prepared for extreme weather conditions, according to a new study from NASA's Chandra X ...

Young supernovas could have spread water out into the cosmos, causing planet formations earlier than originally thought.

According to Brown, Planet X could be the fifth most massive planet in the solar system, similar in composition to icy Neptune and orbits the sun every 10,000 years. Finding this planet is easier ...

There are eight official planets (sorry, Pluto) in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. But astronomers have spent the better part of a century wondering ...