Astronomy TOP STORY

Simulations Reveal An Unusual Death for Ancient Stars

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Stellar Death Simulation

Certain primordial stars--those between 55,000 and 56,000 times the mass of our Sun, or solar masses--may have died unusually. In death, these objects--among the Universe's first-generation of stars--would have exploded as supernovae and burned completely, leaving no remnant black hole behind.


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A Young Galaxy in the Local Universe?

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UGC 5340

Astronomers usually have to peer very far into the distance to see back in time and view the universe as it was when it was young.

NASA Prepares for Planetary Science Balloon Mission

NASA Prepares for Planetary Science Balloon Mission

The Balloon Observation Platform for Planetary Science (BOPPS) is a high-altitude, stratospheric balloon mission that is planned for launch today to study a number of objects in our solar system, including an Oort cloud comet.


Most Stars are Born in Clusters, Some Leave Home

Most Stars are Born in Clusters, Some Leave Home

New modeling studies from Carnegie's Alan Boss demonstrate that most of the stars we see were formed when unstable clusters of newly formed protostars broke up.


Gravitational Waves According to Planck

Gravitational Waves According to Planck

Scientists of the Planck collaboration, and in particular the Trieste team, have conducted a series of in-depth checks on the discovery recently publicized by the BICEP2 project (the Antarctic observatory)


Infant Solar System Shows Signs of Windy Weather

Infant Solar System Shows Signs of Windy Weather

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have observed what may be the first-ever signs of windy weather around a T Tauri star, an infant analog of our own Sun.


Monster Galaxies Gain Weight by Eating Smaller Neighbors

Monster Galaxies Gain Weight by Eating Smaller Neighbors Video in Story

Massive galaxies in the Universe have stopped making their own stars and are instead snacking on nearby galaxies, according to research by Australian scientists.


Latest Measurements from AMS Unveil New Territories in Flux of Cosmic Rays

Latest Measurements from AMS Unveil New Territories in Flux of Cosmic Rays

The Alpha Magnetic Spectrometer (AMS) collaboration has today presented its latest results. These are based on the analysis of 41 billion particles detected with the space-based AMS detector aboard the International Space Station.


A Look at Pulsar PSR J1640-4631

A Look at Pulsar PSR J1640-4631

The blue dot in this image marks the spot of an energetic pulsar -- the magnetic, spinning core of star that blew up in a supernova explosion.


Hubble Helps Find Smallest Known Galaxy Containing a Supermassive Black Hole

Hubble Helps Find Smallest Known Galaxy Containing a Supermassive Black Hole

Astronomers using data from NASA's Hubble Space Telescope and ground observation have found an unlikely object in an improbable place -- a monster black hole lurking inside one of the tiniest galaxies ever known.


Probing the Mystery of Hours-long Celestial Explosions

Probing the Mystery of Hours-long Celestial Explosions

Scientists at the University of Leicester have shed light on the origin of so-called "ultra-long Gamma Ray bursts", in results to be presented at a meeting in Russia next week.


Galaxy Mergers Defy Expectations to Produce Disk Galaxies

Galaxy Mergers Defy Expectations to Produce Disk Galaxies Video in Story

Galaxy mergers are quite common throughout the history of the Universe and for decades astronomers believed that these cosmic collisions led primarily to the formation massive elliptical galaxies.


Chandra X-ray Observatory Finds Planet That Makes Star Act Deceptively Old

Chandra X-ray Observatory Finds Planet That Makes Star Act Deceptively Old

A planet may be causing the star it orbits to act much older than it actually is, according to new data from NASA's Chandra X-ray Observatory. This discovery shows how a massive planet can affect the behavior of its parent star.


Hot Jupiters Provoke Their Own Host Suns to Wobble

Hot Jupiters Provoke Their Own Host Suns to Wobble

These large, gaseous exoplanets (planets outside our solar system) can make their suns wobble when they wend their way through their own solar systems to snuggle up against their suns, according to new Cornell University research published in Science, Sept. 11.


Spitzer's SPLASH Project Dives Deep for Galaxies

Spitzer's SPLASH Project Dives Deep for Galaxies

A new survey of galaxies by NASA's Spitzer Space Telescope is taking a plunge into the deep and uncharted waters of our cosmos.


Observations of Messier 54: Lithium Problem Also Applies Outside our Galaxy

Observations of Messier 54: Lithium Problem Also Applies Outside our Galaxy

This new image from the VLT Survey Telescope at ESO's Paranal Observatory in northern Chile shows a vast collection of stars, the globular cluster Messier 54.


Interactive Dark Matter And Milky Way's Missing Satellite Galaxies

Interactive Dark Matter And Milky Way's Missing Satellite Galaxies

Scientists believe they have found a way to explain why there are not as many galaxies orbiting the Milky Way as expected.


Hubble Finds Supernova Companion Star after Two Decades of Searching

Hubble Finds Supernova Companion Star after Two Decades of Searching

Using NASA's Hubble Space Telescope, astronomers have discovered a companion star to a rare type of supernova.



More top stories from September.