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ALMA reveals unusual composition of interstellar comet 2I/Borisov

A galactic visitor entered our solar system last year -- interstellar comet 2I/Borisov. Last December 15 and 16, astronomers directly observed for the first time...

The Earth’s moon may be cracking up

Researchers have discovered a system of ridges spread across the nearside of the Moon topped with freshly exposed boulders. The ridges could be evidence of...

Long-dead stars can yield clues to life in the cosmos

Astronomers may one day decipher the atmospheres of Earth-like rocky exoplanets shown in the picture. The next generation of powerful Earth- and space-based telescopes will...

Jezero crater on Mars may harbor signs of life

A new analysis of satellite imagery supports the hypothesis that the Jezero crater on Mars could be a good place to look for markers...

A large near-Earth asteroid will safely fly past Earth this week

A large near-Earth asteroid will safely pass by our planet on Wednesday morning, providing astronomers with an exceptional opportunity to study the 1.5-mile-wide (2-kilometer-wide)...

Elegant solution reveals how the universe got its structure

The universe is full of billions of galaxies—but their distribution across space is far from uniform. Why do we see so much structure in the...

Astronomers find a six-planet system which orbit in lockstep with each other

To date, astronomers have confirmed the existence of 4,152 extrasolar planets in 3,077 star systems. While the majority of these discoveries involved a single planet,...

Hungry galaxies grow fat on the flesh of their neighbors

Galaxies grow large by eating their smaller neighbors, new research reveals. Exactly how massive galaxies attain their size is poorly understood, not least because they...

NASA’s Hubble showcases a vast cosmic undersea world teeming with stars

NASA is celebrating the Hubble Space Telescope's 30 years of unlocking the beauty and mystery of space by unveiling a stunning new portrait of...

Fleets of ‘nanocardboard’ aircraft could explore Mars

A fleet of tiny “nanocardboard” aircraft could help explore Mars, researchers say. They each weigh about as much as a fruit fly and have no...