Astronomers

After about a month of darkness, Hubble is back online and already collection impressive scientific data.

Retired NASA Engineers Return to Fix Hubble Telescope

The repaired space computer is back online and already beaming spectacular images of distant galaxies back to Earth

Jupiter and its largest moon Ganymede are shown in this image. Ganymede is slightly larger than the planet Mercury. Meanwhile, Jupiter's new 80th moon is much smaller, likely only a few dozen miles in diameter.

Amateur Astronomer Discovers New Moon Orbiting Jupiter

Kai Ly spotted the unnamed satellite using telescope images from 2003

A new image of a powerful jet firing out of the black hole at the center of the radio galaxy Centaurus A, taken with the Event Horizon Telescope.

New Black Hole Image Shows Plasma Jets Blasting Into Space

Researchers say the new, detailed image of the black hole at the center of the Centaurus A galaxy could reveal how its jets formed

People lie on the ground to view the Perseid meteor shower in Rocky Mountain National Park in Colorado at an astronomy night event on August 12, 2018.

How to Watch the Perseid Meteor Shower

Known for its 'fireball' meteors, the Perseid shower began on July 14 and will peak in mid-August

Palomar 5 is located about 80,000 light-years from Earth in the Milky Way’s inner halo.

Scientists Discover Bevy of Black Holes in Our Own Galaxy

Palomar 5's unusual cluster may explain some of the Milky Way's star streams and other phenomena

A newly discovered white dwarf star (right) is only slightly larger than the moon (left).

Incredibly Dense White Dwarf Star Packs the Mass of the Sun Into the Size of the Moon

Researchers say if the star was any more massive it would likely collapse under its own weight and explode

Data collected revealed that a neutron star twice as massive as the sun was swallowed up by a black hole nine times the size of the sun.

Astrophysicists Detect a Black Hole Gobbling Up a Neutron Star in Two Separate Events

Researchers spotted both events using sensors to locate ripples in spacetime that traveled 900 million years to reach Earth

An artist's rendering of the Earth and sun seen from space. Astronomers on Earth can detect other worlds when far away stars flicker as an orbiting planet passes in front of them, partly blocking our view. New research asks how many alien worlds might have been able to detect Earth in this way.

If Aliens Exist in These 1,700 Solar Systems, They Can Probably See Earth

Hypothetical alien astronomers orbiting these stars could have seen the sun’s light flicker as Earth passed in front of it

It’s considered one of the coldest and smallest exoplanets discovered so far.

This Neptune-Like Exoplanet May Have Water Clouds

Despite the possible presence of water vapor, TOI-1231 b is likely not habitable because of its size

A new image of the black hole at the center of the M87 galaxy. The image shows patterns of polarized light around the supermassive black hole, which in turn reveals the structure of the black hole’s magnetic fields.

Scientists Capture Swirling Magnetic Fields in New Image of Black Hole

The updated picture adds polarization, revealing new details of the stunning cosmic phenomenon

An artist's illustration imagines the newly discovered Farfarout (lower right), now confirmed to be the most distant object ever observed in our solar system. Farfarout is 132 times the distance of Earth to the sun (upper left) and is estimated to be around 250 miles across.

Meet Farfarout, the Most Distant Object in the Solar System

The new planetoid unseats Farout, which held the title for about two years

Published in Scientific Reports, the new study by astronomers Amir Siraj and Avi Loeb of the Harvard-Smithsonian Center for Astrophysics, propose that a series of break-ups and chance events sent the huge chunk of space rock our way.

Astrophysicists Chart Source of Asteroid That Killed Dinosaurs

A new model explains a possible route for the extraterrestrial rock before it blasted Earth

An artist's rendering of the five-planet system that orbits star HD 108236, or TOI-1233. In the foreground is a hot, rocky planet that resembles Earth.

Balancing Homework and A.P. Classes, These High Schoolers Discovered Four Exoplanets

Thanks to a Harvard-Smithsonian mentoring program, high school students Kartik Pinglé and Jasmine Wright helped discover new worlds

Astronomers have discovered the oldest and most distant quasar in the universe. The quasar, named J0313-1806, formed just 670 million years after the Big Bang some 13 billion light years away.

This 13-Billion-Year-Old Supermassive Black Hole Is the Oldest Ever Found

Huge black hole is so old it offers a glimpse into the early universe, and so big it challenges ideas of how black holes form

In theory, the wood would burn up upon re-entering Earth's atmosphere. But wooden space junk is still space junk.

Japan Hopes to Send a Wooden Satellite to Space in 2023

The group hopes the cube-shaped wood orbiter will help reduce space waste

This is the all-sky map created by the eROSITA X-ray telescope, represented in false color (red for energies 0.3-0.6 keV, green for 0.6-1.0 keV, blue for 1.0-2.3 keV). The original image was smoothed in order to generate the above picture.

An X-Ray Hourglass Is Emerging From the Middle of the Milky Way

Astronomers spotted the two gargantuan bubbles of charged particles ballooning out from the middle of our home galaxy

The telescope collapsed ahead of its scheduled demolition.

Massive Arecibo Telescope Collapses in Puerto Rico

The radio telescope was once the largest in the world, and played a key role in many major astronomical discoveries over the last 50 years

This year's top ten titles explore the cosmos, fear and cleanliness alongside narratives about owls, fish and eels.

The Ten Best Science Books of 2020

New titles explore the mysterious lives of eels, the science of fear and our connections to the stars

The Blue Ring Nebula is invisible to the human eye, but telescopes can measure the ultraviolet light, which is shown here in blue.

Astronomers Crack the Case of the Blue Ring Nebula

The source of the dazzling display puzzled scientists for more than a decade

Teams of engineers looked for remedies to help save the telescope, but repairs would be too risky for a construction team to safely undertake.

After Suffering Irreparable Damage, It's Lights Out for the Arecibo Observatory's Iconic Telescope

The 1,000-foot telescope has been a pillar for astronomical research, leading to some of the cosmos' most exciting discoveries

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