When you gaze up at the night sky, you’re looking back in time. Light from the stars takes years, sometimes millennia, to ...

Our solar system hosts almost 900 known moons; more than 400 orbit the eight planets while the remaining orbit dwarf planets, ...

This newly discovered jellyfish galaxy, named COSMOS2020-635829, has a redshift of z = 1.156, meaning astronomers are seeing it as it existed about 8.5 billion years ago. That makes it the most ...

A jellyfish galaxy is found in dense galaxy clusters and appears to be “dripping” gas, forming long, tentacle-like tails of newborn stars trailing behind it. The visual resemblance to a jellyfish ...

Far beyond Neptune, in the frozen depths of the Kuiper Belt, many ancient objects oddly resemble giant snowmen made of ice ...

Computer simulations suggest NASA’s Habitable Worlds Observatory could detect Earth-like exomoons around gas giant exoplanets through reflected starlight and lunar eclipses.

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

Dark matter is so pervasive throughout galaxies that its presence explains the stability and motion of stars in systems such as the Milky Way. For example, current models indicate that our galaxy is ...

The “horizon” he points to isn’t a doorway to the divine, other scientists say. Yet, modern physics has been trying to answer questions once left to religion.

Water may look ordinary, but it is one of the strangest and most essential substances in existence. Its unusual chemical ...

They show up as a mathematical solution in general relativity, basically as a time-reversed version of a black hole. Some ...