61–80 of 471 results
Globular cluster outside M81

Stellar Science

Fast Radio Burst's Unlikely Home Puzzles Astronomers

Astronomers have found a fast radio burst — presumably a flash from a young stellar remnant — amongst the ancient stars of a globular cluster, challenging ideas about what produces these enigmatic flashes.

Stellar Science

Protostar Companions in Orion

How are stars born? One of the best places to test ideas about stellar birth is in Orion.

HD 93521

Stellar Science

A Star Where It Shouldn't Be

There’s a massive star in our galaxy’s halo, far away from the usual star-forming haunts. How did it get there?

Artist's illustration of a magnetar

Stellar Science

Exploring a Magnetospheric Origin for Fast Radio Bursts

Astronomers are starting to close in on the origins of fast radio bursts — powerful, fleeting flashes of radio waves seen at extragalactic distances.

Flame Nebula

Stellar Science

The Flames of Orion and a Supergiant Star's End

Astronomers watch starbirth and stardeath, capturing a unique view of a stellar nursery and witnessing a supergiant's supernova.

Compact object emits jets and ring of light in artist's concept of a supernova dubbed

Black Holes

Stellar Remnant at the Core of Mysterious Flash Dubbed "The Cow"

Astronomers have identified the origin of a mysterious flash that occurred three years ago.

Black hole in another galaxy (artist's illustration)

Black Holes

Did Astronomers Spot a Black Hole in Another Galaxy? Maybe Not

Astronomers might have spotted a stellar-mass black hole in another galaxy — but not everyone agrees with what they found.

Stellar companion strips outer layers from massive star (art)

Stellar Science

Close Companions Help Stars Make More Carbon

Massive stars can produce twice as much carbon when they have a close binary companion, according to a new study. The result is a small but important step in understanding the cosmic origin of elements.

An image of the globular cluster Messier 5

Stellar Science

Unlocking the History of Globular Cluster Messier 5

A new study uses precise measurements of chemical elements to explore the formation history of one of the oldest globular clusters in the Milky Way.

Magnetar

Stellar Science

China’s FAST Observatory Sees More Than 1,000 Radio Bursts from a Single Spot

The largest haul of fast radio burst observations ever recorded, all from a single fast radio burst, is helping astronomers understand what causes these fleeting cosmic phenomena

Apollo 11 photo of Earth with glare from Sun

Stellar Science

Did Astronomers See a Distant, Dying Star? Or an Earth-bound Satellite?

What seemed a lucky break — the discovery of a gamma-ray burst in the most distant known galaxy — might instead be the flash of passing space debris. As satellites fill low-Earth orbit, such events might become common.

Superbubble in the Milky Way

Stellar Science

Supernova Blasts Hollowed Out "Giant Cavity" in Space

Some 10 million years ago, dying stars cleared a giant cavity in space and ultimately inspired a new generation of star formation.

Gravitationally lensed supernova, four ways

Stellar Science

60-second Astro News: Solving Supernova Mysteries

This week, astronomers have solved one supernova mystery and predicted a new one — to be solved in 2037.

Artist's illustration of merger-triggered supernova

Stellar Science

New Kind of Supernova Implodes Stars Before Their Time

Astronomers have found the first circumstantial evidence for a supernova triggered by a merger with a neutron star or maybe even a black hole.

M13

Black Holes

60-second Astro News: White Dwarfs Still Burn, Black Holes Merge

This week in astronomy news, we learn that some white dwarfs still burn and image X-rays from black holes almost 12 billion light-years away.

Star with planet

Stellar Science

Astro News: Planet-eating Stars and an Accidental Brown Dwarf

This week in astronomy news: A citizen scientist happens upon a weird, ancient brown dwarf and astronomers discover that Sun-like stars eat their own planets.

Astronomy & Observing News

New Observations Challenge Popular Radio Burst Model

Strange behavior caught by two radio observatories may send theorists back to the drawing board.

an illustration of a flaring red dwarf, with a disk of gas and dust containing an earth-like exoplanet.

Exoplanets

Red Dwarfs Aren’t So Bad (For Planets) After All

Red dwarf stars appear to flare preferentially at high latitudes, which might keep their exoplanets habitable instead of hellish.

RS Oph animation

Celestial News & Events

Recurrent Nova RS Ophiuchi Just Blew its Top!

The recurrent nova RS Ophiuchi just went into outburst — its first burst in 15 years — and it's bright enough to see with the naked eye

Giant flare on a magnetar

Stellar Science

Milky Way Magnetar Spits Gamma Rays on Schedule

A Milky Way magnetar surprises astronomers by burping up gamma rays right when their predictions anticipated.