Chandra X-ray Observatory

Supernova Remnant Cassiopeia A is Lopsided

Cassiopeia A is the remnant of a supernova that exploded 11,000 light-years away. The light from the exploding star likely…

6 months ago

A Pulsar is Blasting out Jets of Matter and Antimatter

Why is there so much antimatter in the Universe? Ordinary matter is far more plentiful than antimatter, but scientists keep…

6 months ago

Astronomers Might Have Found a Planet in Another Galaxy

Not that long ago,, astronomers weren't sure that exoplanets even existed. Now we know that there are thousands of them…

11 months ago

The Sun is Mellow Yellow Today. Billions of Years Ago? Not So Much

Planetary formation theory has been undergoing a lot of changes recently, with an ever expanding litany of events that can…

1 year ago

Rare Triple Galaxy Merger With at Least Two Supermassive Black Holes

One of the best things about that universe is that there is so much to it.  If you look hard…

1 year ago

New Mosaic Shows the Galactic Core From Opposite Sides of the Electromagnetic Spectrum

NASA recently released a panoramic mosaic image that beautifully captures the mysterious and extremely energetic environment at the heart of…

1 year ago

Uranus X-Rays are Probably Reflected Sunlight, but There Could be Another Source as Well

X-rays offer a unique insight into the astronomical world.  Invisible to the naked eye, most commonly they are thought of…

1 year ago

Astronomers Think They’ve Found the Neutron Star Remnant Left Behind from Supernova 1987A

It was the brightest supernova in nearly 400 years when it lit the skies of the southern hemisphere in February…

2 years ago

A New Supernova Remnant Found from an Exploding White Dwarf Star

Astronomers have spotted the remnant of a rare type of supernova explosion. It's called a Type Iax supernova, and it's…

2 years ago

Only 31 Magnetars Have Ever Been Discovered. This one is Extra Strange. It’s Also a Pulsar

Some of the most stunningly powerful objects in the sky aren’t necessarily the prettiest to look at.  But their secrets…

2 years ago