Scientists have long know many objects floating at the solar system's out edges resemble snowmen, but the reasons why were ...

Can NASA and Elon Musk get us to Mars and beyond?

A lucky alignment of galaxies allowed researchers to identify the most powerful and distant "space laser" ever found.

A stunning new Hubble image reveals the most detailed look yet at the Egg Nebula, the youngest and closest pre-planetary ...

A proposed five-satellite Cosmic Positioning System could measure cosmic distances directly and help address discrepancies in the Hubble constant through solar system–scale triangulation.

Hubble’s deep-space images reveal galaxies as far as 13 billion light years away, meaning we see them just 750 million years after the Big Bang. In a single frame, more than 10,000 galaxies appear, ...

Scientists discovered a distant jellyfish galaxy with star-forming "tails" stretching back 8.5 billion years.

The telescope observed the ice giant for a full rotation, revealing how temperature and charged particles vary with altitude.

New Priority Mail and Priority Mail Express stamps now availableWASHINGTON, Feb. 24, 2026 /PRNewswire/ -- Today, the U.S. Postal Service released new ...

A newly discovered galaxy with glowing star-filled "tentacles" is rewriting parts of cosmic history.

Neptune’s mid-latitude clouds began fading in 2019 and have not recovered, according to nearly three decades of observations from the Hubble Space Telescope and ground-based observatories. By 2020, ...

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 ...