Browse Bulletins
Distant Quasars: Shedding Light on Black Holes
Gravitational lensing reveals a very hungry black hole.
Gravitational Waves Detected
LIGO detectors open a new window on the universe.
Shedding Light on Type Ia Supernovae
AMNH researchers examine the chemistry of exploding stars.
The Hunt for Planet X
A large, unseen planet may be lurking in the furthest reaches of our solar system.
Phobos—A Groovy Moon
Mars's larger moon may be cracking up.
New Horizons Brings Pluto Into Focus
Flyby delivers sharpest view of distant, icy world.
Hubble Space Telescope: 25 Years and Counting
A landmark anniversary for a powerful telescope.
Lighting Up Chandra’s X-Ray Views
Wavelengths across the spectrum illuminate Chandra images.
Exploring a Star’s Death in 3D
Gas traces in a supernova remnant map the star's violent end.
Rosetta Mission Lands Probe on Comet
A mission that began a decade ago reaches its destination.
Jupiter’s Shrinking Storm
Time may be running out for the Great Red Spot.
A Star’s Remains Reveal Its Dying Moments
High-energy emissions at a dead star’s core show how it exploded.
Students Discover Young Supernova
Amid cloudy skies, a nearby stellar explosion is spotted.
Seeing Planets Like Never Before
Exoplanet details are finally coming to light.
Signs of Water Detected on Distant Worlds
Telescope observations reveal atmospheric water on exoplanets.
Protecting Earth from Asteroid Impacts
The United Nations calls for an asteroid defense plan.
Backyard Astronomers Are Pros at Observing Jupiter
Constant vigilance rewards hobbyist astronomers.
Rare Star Exposes a Black Hole’s Appetite
A pulsing star at our galaxy’s heart shares a black hole’s secrets.
First Glimpse of a Distant Star’s Polar Flip
Observations of a star’s magnetic field reveal unusual behavior.
Curiosity: Searching for Carbon
Watch the latest Mars rover hunt for signs of life.
Galaxies Meet in a Massive Merger
Two giant galaxies combine to form a massive ellipse.
Many Star Types Host Planet-Building Material
Planet-forming particles swarm an unlikely star host.
Saturn System Is Showing Its Age
Plentiful ice in the Saturn system hints at its age.
Enormous Black Hole Spins at Near-Light Speed
Astronomers measure how fast a black hole spins.
Nile-Like River Found on Moon of Saturn
A river valley found on a distant moon resembles Earth’s Nile.
Sun-Like Star May Host Several Planets
A giant hole in the dust disk around a star could hold multiple planets.
MoonKAM Brings the Moon to Students
Students partner with NASA to direct cameras orbiting the Moon.
The CMB: A New View from the South Pole
An enormous telescope observes the Universe's oldest light.
Starburst Lights Up a Galaxy Cluster
An enormous galaxy cluster is birthing stars at a furious pace.
Curiosity Lands on Mars
NASA’s mission control guided Curiosity to a perfect landing in Gale Crater.
The Transit of Venus
Sky-gazers caught a rare glimpse of Venus framed by the Sun.
SpaceX Dragon Succeeds in Historic Mission
The first private mission visits the International Space Station.
The Final Voyage of the Enterprise
The Space Shuttle Enterprise took a final flight on the way to its new home in NYC.
Vesta: A New Look at an Ancient Asteroid
NASA’s Dawn spacecraft captures detailed images of a giant asteroid’s alien landscape.
Infant Stars Shimmer in Orion's Nebula
Infrared data from two telescopes combine to expose rapid growth of infant stars.
SOFIA: Stars and the Space Between
NASA's airborne observatory captures views unmatched by ground telescopes.
Kepler Discovers Dozens of Worlds
Recent finds add to a growing list of nearby Earth-like planets.
GRAIL Spacecraft Ready to Map the Moon
Twin satellites investigate the lunar surface and structure.
Curiosity Rover Heads for Mars
Curiosity rover launched on November 26, beginning its long journey to Mars.
Hubble Spots Star Factories
Newly discovered dwarf galaxies are fast and furious in their production of stars.
Supernova of a Lifetime
Astronomers observe a rare supernova—the closest to Earth in nearly a century.
Elusive Y-Dwarfs Discovered
The WISE mission catches sight of a faint, elusive type of brown dwarf.
Exposing Invisible Planets
Scientists suspect a distant planet has a magnetic field.
Brown Dwarfs: Tail End of the Stars
The search for the intermediate objects between stars and planets.
MESSENGER Orbits Mercury
MESSENGER returns the first images from its orbit around Mercury.
Asteroid Provides Pre-Planet Clues
A close view of the asteroid Kleopatra and its two moons gives clues to planet formation.
How Dark Is Your Sky?
Become a citizen scientist and help measure light pollution in your area.
Black Holes in a Rare Ring
A NASA X-ray telescope reveals an unusual ring of eight black holes.
Seeking Signs of Another Universe
Does a shroud of energy from the Big Bang bear scars of other universes?
How Did Saturn Get Its Rings?
Astronomers propose a new theory to explain Saturn's unusual rings.