561–580 of 613 results


ALMA Minds the (Planet‑Forming) Gap

For the first time, astronomers have imaged a key stage in planet formation, witnessing the gas streams that signal two gas giant planets sweeping up material around a star.

Jupiter, Ganymede, Europa and double shadows, March 25, 2019

Astronomy & Observing News

Tour Jupiter with Our Newest App

Jupiter reigns big and beautiful over December's sky. Now you can take our newest app with you as a guide to Jupiter's moons, Great Red Spot, and more.

Solar System

Van Allen Probes Peek at Radiation Belts

The twin Van Allen Probes have only been spaceborne for 60 days, but they’ve already returned heaps of data about the radiation belts, whose "killer electrons" endanger satellites.

NGC 1277


A Big Black Hole in a Small Galactic Pond

A record-breaking black hole lurking at the center of a compact galaxy weighs about 17 billion Suns, a new study finds. Now astronomers are wondering: how did such a small galaxy come to harbor a leviathan?

Stellar Science

A Planetary Nebula Reborn — For a While

A stunning image from the Hubble Space Telescope and Chandra X-ray Observatory reveals a planetary nebula come back to life.

Black hole tilt

Black Holes

Tilt a Black Hole and Watch What Happens

A simulation published in yesterday's Science shows how black holes govern their surroundings. Watch a black hole work its magic in this new video.

Celestial News & Events

Not in Australia? Watch Today's Eclipse Online

Watch today's total solar eclipse even if you haven't traveled Down Under. At 3:35 p.m. EST, the Moonwill cover the Sun for a maximum of 4 minutes and 2 seconds. Two sites will let you see the spectacle live online.

Stellar Science

Explaining Cosmic Butterflies

Planetary nebulae, left behind by stars like our Sun, come in chimerical shapes. New observations confirm that many of these shapes may have a common explanation.

Straying stars


Stray Stars Might Solve Infrared Puzzle

A new study suggests that lonesome stars in galaxies’ farthest outskirts contribute to a mysterious, blotchy glow that permeates the sky.

Solar System

Saturn’s Frankenstorm: The Aftermath

Though Saturn’s Great White Spot faded by the end of 2011, infrared telescopes have revealed the storm's long-lasting impact.

Professional Telescopes

The Flares from Milky Way’s Black Hole

Our galaxy’s central supermassive black hole emits regular, mysterious X-ray flares. For the first time, NASA’s newest sharp-eyed telescope has captured a high-energy view of the action.

Stellar Science

Revisiting Orion's Stellar Membership

The Orion Nebula hosts a well studied star cluster, the gold standard by which astronomers measure all other clusters. New research suggests that this benchmark might need to be revised.

Science and Space Policy

World-Class Telescope For Sale

The impending closure of the United Kingdom Infrared Telescope might be averted if the observatory’s director can find a buyer.

People, Places, and Events

ESO Celebrates Its History and Future

On October 5th, the European Southern Observatory and the Australian Square Kilometer Array Pathfinder will broadcast live webcasts to celebrate years gone by and new beginnings.

Milky Way

A Black Hole in Orion?

The Orion Nebula Cluster might be home to a black hole more than 100 times the mass of the Sun, according to a recent simulation.


Hubble Goes Deep — eXtremely Deep

The Hubble Space Telescope's newest deep space image reveals 5,500 galaxies in a tiny, dark patch of sky in the constellation Fornax.

Professional Telescopes

Sharpest Ever Images of the Sun

Astronomers at Big Bear Solar Observatory in sunny California have upgraded their 1.6-meter telescope with a new adaptive optics system. The scope is now producing the highest-resolution images ever taken of the Sun.


Galaxy Family Portrait

The Hubble Space Telescope snapped a family portrait of a pair of galaxies in the nearby Virgo galaxy, where a huge elliptical galaxy dwarfs its spiral sibling.


A Tatooine Family

Astronomers have discovered two exoplanets orbiting two stars, both answering and raising questions about how planets form.

Space Missions

NASA Lofts Radiation-Belt Space Probes

Two space probes launched toward the Van Allen radiation belts today. They’ll help scientists observe and predict the behavior of ultrafast, and potentially harmful, charged particles.