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New observations where stars end and brown dwarfs begin
Georgia State University astronomers say they have found observational evidence for the theoretically predicted break between very low-mass stars and brown dwarfs.
December 9, 2013
Outburst of Andromedid meteors may continue tonight
Watch for a possible continuation of the unexpected Andromedid meteor outburst tonight! The Geminid meteor shower is now rising to a peak, too.
December 9, 2013
Have we seen the last of Comet ISON?
Comet ISON is now thought to be a traveling debris field, with no solid nucleus or core. Will we see the debris field from Earth? No one knows yet.
December 6, 2013
Best view of Saturn hexagon
The Saturn hexagon is a unique six-sided jet stream, a current of air, around Saturn's north pole.
December 6, 2013
The intricate flow of Comet Lovejoy’s tail
Astronomers used the Subaru Telescope to capture this image of Comet Lovejoy's tail on December 3, 2013. This comet is now visible in earthly skies.
December 6, 2013
Astronomers discover planet that shouldn’t be there
The discovery of a giant planet orbiting its star at 650 times the average Earth-sun distance has astronomers puzzled over how such a strange system came to be.
December 5, 2013
Two supermassive black holes in death spiral
Astronomers have spotted what appear to be two supermassive black holes 3.8 billion light-years from Earth, circling each other like dance partners.
December 5, 2013
Genius materials on the ISS
With proper coaxing, molecules in microgravity can assemble themselves into forms with surprising properties. This new NASA ScienceCast video explores the possibilities
December 1, 2013
Fast, furious, refined: Smaller black holes can eat plenty
Gas from a companion star is thought to feed a stellar-mass black hole’s voracious appetite, in the galaxy M101.
November 30, 2013
Experience Comet ISON’s encounter with the sun online
ISON's moment of truth is here - its closest approach to the sun - today. Here are some ways to experience it online.
November 28, 2013
