SUNSET: 
A Galaxy Without (Much) Dark Matter
Astronomers have found a peculiar object: a fluffy galaxy that has little to no dark matter.
Amazing Storms, Jet Streams on Jupiter
NASA’s Juno spacecraft has found breathtaking cyclones at Jupiter’s poles and probed how deep the planet’s jet streams go.
Extra Stars Might Downsize Exoplanets
Follow-up studies of candidates planetary systems found by NASA’s Kepler mission suggest that companion stars make some worlds appear smaller than they really are.
Some Plants Grow Well in Martian Soil
Astrobiology students cultivated leafy greens, sweet potatoes, and even hops in simulated Martian dirt.
Ringed Disks Don’t Always Mean Planets
Astronomers presenting at the winter American Astronomical Society meeting caution that the features often pointed to as evidence of growing natal planets could form on their own.
60-Second Astronomy News: Dec. 20, 2017
This week's roundup of astro news brings us a polar-orbiting planet, a novel way to measure stellar masses, and ginormous convective bubbles on a distant star.
The Black Hole Files with Camille Carlisle
Most Distant Black Hole Yet
Astronomers have discovered a supermassive black hole scarfing down gas just 690 million years after the Big Bang.
The Black Hole Files with Camille Carlisle
Infant Stars Huddle near Black Hole
A team of astronomers has found signs of small stars forming within a few light-years of the Milky Way’s central black hole.
LIGO Sees Smallest Black Hole Binary Yet
LIGO has detected another black hole merger, raising the tally to five.
The Black Hole Files with Camille Carlisle
First Black Holes Maybe Had Supersonic Help
Gas flows in the early universe may have kept clouds from collapsing too soon, enabling them to grow into massive black hole seeds.
Some Cosmic Rays Come from Outside the Galaxy
Astronomers have detected more extremely energetic cosmic particles coming from one side of the sky than the other.
New Map of Water in Moon Dust
A new analysis maps out water across the lunar surface, revealing how its abundance changes with latitude.
Does Dark Energy Change Over Time?
Scientists are considering whether the mysterious “force” accelerating the universe’s expansion changes with time.
New Age Estimate for TRAPPIST-1
A new study suggests that the seven-planet dwarf star could be much older than the Sun.
Sun's Waves Reveal Core's Spin
Solar astronomers may have finally detected gravity waves in our star’s core, revealing that the Sun’s central region rotates about four times faster than the outer layers.
Exoplanet Might Have Ozone-like Layer
Astronomers have potentially detected a stratosphere in the atmosphere of a hot Jupiter.
Milky Way May Be Made with Swapped Gas
High-powered simulations suggest that half of the material in the Milky Way could come from other galaxies.
The Black Hole Files with Camille Carlisle
LIGO Detects Third Black Hole Merger
Scientists with the gravitational-wave observatory announce another discovery, this time of a black hole merger twice as far away as previous detections.
Seventh TRAPPIST-1 Planet Confirmed
Astronomers have confirmed the existence of the seventh planet around the ultracool dwarf star TRAPPIST-1.
How Hard Did It Rain on Ancient Mars?
Mars was once far wetter than it is now — but just how much rain fell, and when?
