421–440 of 533 results
stars orbiting black hole

Stellar Science

Star Zips around Milky Way's Central Black Hole

Astronomers announced that they've successfully tracked a star that takes less than 12 years to whip around the Milky Way's central black hole. The star isn't so special on its own, but combined with other observations it might help unwrap the region's mysteries.

Stellar Science

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.

Stellar Science

Universe is Still Missing its Lithium

New observations of the Small Magellanic Cloud have only heightened the mystery surrounding a decades-long cosmic conundrum: why does the universe have so much less lithium than astronomers think it should?

chemical structure of glycolaldehyde

Stellar Science

Space a Little Sweeter

Astronomers have detected a simple sugar called glycolaldehyde in the gas around two young stars. The ALMA observations that led to the discovery are impressive, but don’t jump on the “life” bandwagon just yet.

Stellar Science

Black Holes Might Form Like Planets

Astronomers have plenty of evidence for small and large black holes, but have had little luck tracking down the mid-sized variety. One team of researchers suggests the search has been focused on the wrong places all along.

Stellar Science

Baby Star's Hot Birthmarks

Astronomers have pinpointed the origin of high-energy X-rays coming from a baby star.

Stellar Science

Waves Might Heat Solar Atmosphere

Astronomers are working to unravel the mystery of the Sun's superhot corona, but new work implicating magnetic waves isn't the final word on the matter.

Stellar Science

The Universe’s Lost Lithium

Astronomers are still struggling with a 30-year-old mystery that puts modern cosmology in a head-to-head clash with stellar observations. A new study may make the problem even worse.

Stellar Science

All-Sky Survey Sees Millions of Stars

A collaboration between professional and amateur astronomers is producing a careful map of stellar brightnesses and colors across the entire night sky. The survey should fill a hole that sometimes hampers quick, accurate measurements of events such as supernovae.

Stellar Science

Small Planets’ Evolutionary Edge

The discovery that planets can form around a variety of stars — and not just specific types, as previously thought — might open the floodgates on the search for habitable worlds in the galaxy.

Stellar Science

Failed Stars Oddly Rare

Astronomers hunting for brown dwarfs in our solar neighborhood have been thrown a surprise: these star wannabes are far less common than previously thought.

Stellar Science

Pro-Am Teamwork on the Rise

As demonstrated this week during a gathering of observers in Big Bear, California, amateur and professional astronomers are joining forces as never before.

Stellar Science

Superflares from Sun-like Stars

NASA's Kepler mission is finding solar-type stars that emit jaw-dropping explosions of high-energy particles and radiation. Now astronomers are looking into why some solar-type stars emit superflares — and why the Sun never will.

Stellar Science

Europe's New Eye on the Sun

The just-completed Gregor telescope, situated on Tenerife in the Canary Islands, ranks as Europe's largest solar sentinel and the third largest in the world.

Stellar Science

IBEX's Slower Sun — and No Bow Shock

NASA's Interstellar Boundary Explorer has discovered that the Sun has no bow shock, overturning the basis for decades of scientific research.

Stellar Science

Black Hole Eats Stripped Star

A closely-watched flare from a gargantuan black hole in a distant galaxy has revealed to astronomers not only the mass of the black hole that ate the snack but the type of star that met its end as the meal.

Stellar Science

“Coronal Cells” in Sun’s Atmosphere

Astronomers have discovered an unexpected new feature on the Sun, leading to further insights about the solar magnetic field.

Stellar Science

Watch April 16th's Solar Flare!

The Sun erupted yesterday in a magnificent display, and more might be on its way.

Stellar Science

New ALMA Images Stoke Exoplanet Flame

Astronomers have released the first new science results from the Atacama Large Millimeter/submillimeter Array (ALMA), a still-under-construction network of 66 antennas in northern Chile. The new observations suggest the contentious Fomalhaut star system may have two small planets shepherding its gigantic ring.

Stellar Science

Kepler Mission Gets Four More Years

NASA's incredibly successful planet-hunter has had its mission extended to 2016 — giving it extra time to find Earthlike worlds in Earthlike orbits.