SUNSET: 
Of Dwarf Galaxies and Voids
Living in voids might be tangentially responsible for three small galaxies’ recent flurries of starbirth.
Cloud Punches Hole in Milky Way
An intergalactic cloud has slammed into the Milky Way Galaxy and left a big hole.
Ceres Bright Spot is Salty
Spectral observations by NASA’s Dawn spacecraft reveal that the dwarf planet’s mysterious beacon is made of salt.
Missing Dwarf Galaxies Never Were
Astronomers may have solved the case of the Milky Way’s missing satellite galaxies. The solution? The galaxies never existed.
How Dead Galaxies Stay Dead
A galaxy in the midst of a merger isn’t forming stars, even though it could. Astronomers think the galaxy’s central black hole might be the reason why.
Beyond the Printed Page: Globular Cluster Simulations
Watch a million stars age in these prize-winning simulations of globular clusters. The simulations track the stars' movements and evolution over 12 billion years.
Where Big Bird Neutrino May Come From
Scientists might have found the source of an incredibly energetic particle that bored into the Antarctic ice sheet.
Did Fermi Detect LIGO’s Merging Black Holes?
NASA’s Fermi Gamma-ray Space Telescope might have detected a burst from the same merging black holes that emitted the gravitational waves LIGO detected.
Saturn Moons Could Be Young
Planetary scientists have increasing reasons to think that some of the ringed giant’s moons are only 100 million years old.
Mars Gravity Map
By tracking deviations in spacecraft orbits, planetary scientists have created a high-resolution map of the Red Planet's gravitational pull.
Super Spiral Galaxies
Astronomers have identified 53 “super spirals” — spiral galaxies that are huge and incredibly luminous — as part of a project exploring archived observations.
Flood Threatens Photographic Plates
A burst pipe flooded Harvard College’s Observatory Hill, submerging thousands of historic photographic plates underwater. Recovery is now under way.
Exoplanet in the Hyades Star Cluster
Professional and amateur astronomers working together have found a young exoplanet in the Hyades star cluster. The planet is weirdly large, given its host star.
Giant Cloud Came from the Milky Way
The massive Smith Cloud falling toward our galaxy’s disk is likely from our galaxy, not a visitor.
Old Stars' Fossil Fields
Astronomers have confirmed that strong magnetic fields are frozen in place deep inside aging stars called red giants.
Spotting "Twins" of Superstar Eta Carinae
Astronomers looking for clones of a massive and famously unstable star in the Southern Hemisphere sky have found five in other galaxies.
NASA's Plans for Putting Humans on Mars
Scientists and engineers gathered together to figure out what would make a good Martian landing site and what hurdles they’ll have to overcome for a 2035 launch.
Newborn Star Puts on Star Wars Show
Infrared observations by the Hubble Space Telescope reveal jets from forming stars.
Our “Magnetic” Black Hole
Astronomers have detected magnetic fields writhing around the Milky Way's central black hole.
Astronomers Take Galaxy’s Pulse
Astronomers have caught a giant elliptical galaxy “shimmering” as its stars pulsate.
