Two Different Satellites Take Two Different Pictures of the Same Galaxy

What a difference a wavelength makes: On the left is the M82 Galaxy as seen in the visible light spectrum, captured by the Hubble Space Telescope — and the image we most associate with that galaxy. On the right is an x-ray image of the same galaxy, taken by NASA's Chandra X-ray Observatory. » 12/19/14 12:00am 12/19/14 12:00am

The closest supernova observed in 25 years is getting brighter

Three days ago, a white dwarf went supernova in nearby Galaxy M82. A starburst galaxy, M82 is a popular target for telescopes on account of its brightness. But its newly formed supernova, which astronomers have named SN 2014J, just became the brightest object in all the galaxy – and it's only going to get brighter. » 1/24/14 6:50am 1/24/14 6:50am