41–60 of 5,025 results
Side-view of Heracles' remains

Milky Way

Astronomers Discover Galactic “Fossil” Inside the Milky Way

Thousands of stars that once belonged to an ancient galaxy are inside our own.

Cosmology

A Dark Matter-less Galaxy, Explained (Maybe)

An international team of astronomers has explained the lack of dark matter in a distant dwarf galaxy — another galaxy stole it.

Geminids from Tenerife

Celestial News & Events

A Banner Year for the Geminid Meteor Shower

With no Moon to brighten the night, this year's rich Geminid meteor shower should be one of the best ever. Find a spot away from city lights, dress warmly, and don't forget the hot chocolate.

Hayabusa 2

Spacecraft and Space Missions

Hayabusa 2 Returns Sample of Asteroid Ryugu to Earth

The predawn operation to recover the Hayabusa 2 sample-return capsule in the Australian Outback was a success.

Milky Way

Gaia Makes Most Accurate 3D Map of the Milky Way Yet

Astronomers have released a new, extremely detailed three-dimensional census of our Milky Way galaxy.

Chang'e 5 panorama

Spacecraft and Space Missions

China's Chang'e 5 Collects Samples, Departs from the Moon

China's Chang’e-5 ascent vehicle has departed Oceanus Procellarum with pieces of lunar soil after a lightning-quick sample collection.

The fading Stingray Nebula

Stellar Science

The Decline of the Youngest Planetary Nebula

The youngest planetary nebula ever found is already fading, shedding light on its star's evolution.

Arecibo damage

Professional Telescopes

The Arecibo Telescope Has Collapsed [Video]

The Arecibo telescope in Puerto Rico has collapsed less than two weeks after officials announced it was too dangerous to attempt repairs.

Chang'e 5 (art)

Spacecraft and Space Missions

China Lands Ambitious Sample-Return Mission on the Moon

The aim of China's Chang'e 5 mission is to return samples of lunar soil to Earth by the end of 2020.

Jupiter-Saturn-Moon Dec 2020

Sky Tour Astronomy Podcast

December 2020: A Busy Month

Step outside after sunset this month to spot Jupiter and Saturn's dramatic pairing, 2020's best meteor shower, and more!

Artist's impression of the outer reaches of our solar system.

Stellar Science

The Eventual Fate of Our Solar System

Have you ever wondered about the future of our solar system? Astronomers have predicted the effect of the Sun's expansion on its planets.

Capella and the Kids

Celestial Objects to Observe

Meet Capella, the Goat Star

Capella is the sixth-brightest star in the sky — and it's more than one star! The main two stars in the system are near-twins, bright yellow giants.

Surveyor 2

Celestial News & Events

Earth's New "Minimoon" May be a 1960s-Era Rocket Booster

An object set to pass near Earth next month may in fact be a relic of the early Space Age.

Birth of a Magnetar

Stellar Science

Gamma-ray Flash Heralds Birth of a Magnetar

What happens when two neutron stars don't add up to a black hole?

Arecibo dish damage

Professional Telescopes

Iconic Arecibo Telescope Damaged, To Be Dismantled

The iconic Arecibo telescope, damaged by two cable failures within three months, is beyond repair.

Blue Ring Nebula

Stellar Science

The Case of the Blue Ring Nebula

After 16 years, astronomers have figured out the origin of a strange ring of ultraviolet light, and shed light on a common — but rarely observed — event.

Astrobiology

Is the Phosphine Biosignature on Venus a Calibration Error?

The already tentative detection of phosphine is under heavy scrutiny from the scientific community. A problem with the ALMA data hasn't helped.

2001 Leonid storm

Solar System

Leonid Meteor Shower to the Rescue

Modest but reliable, the annual Leonid meteor shower returns this week. Take an hour or two to relax and enjoy the show.

Crew One

Astronomy in Space with David Dickinson

SpaceX Launches Four Astronauts to the International Space Station

A crew of four is headed to the International Space Station, on Crew Dragon’s first operational launch, Crew One.

Like moths in the lamplight

Galaxies

Star Clusters Reveal the "Kraken" in the Milky Way's Past

Astronomers have reconstructed the Milky Way's merger history, finding that our galaxy has absorbed five large satellite galaxies in the last 12 billion years.

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