NGC 3982 spans about 30,000 light-years, making it about one-third of the size of our Milky Way galaxy. It’s about 68 million light-years away and receding from us at about 1100 km/s. The galaxy is a typical spiral galaxy, and it has a supermassive black hole at its core. It also has a high rate of star birth within its spiral arms. Its bright nucleus contains older populations of stars, which are more densely packed toward the center. The galaxy also has active star formation in the circumnuclear region. NGC 3982 has a mini-spiral between the circumnuclear star-forming region and the galaxy’s nucleus which may be the channel through which gas is transported to the central supermassive black hole from the star-forming region.
Image Credit: ESA / NASA
Excellent narration begins at about 2:50 in this video.
Video Credit: NASA
This Hubble image peers deep into the core of the Crab Nebula, revealing its beating heart. At its center are the remnants of a supernova which sends out clock-like pulses of radiation and waves of charged particles. The neutron star at the very center of the Crab Nebula has about the same mass as the Sun, but it’s compressed into an incredibly dense sphere that is only a few miles across. Spinning 30 times a second, the neutron star ticks along, shooting out detectable beams of energy.
Image Credit: NASA / ESA
This color picture from the Juno spacecraft is made from some of the first images taken by JunoCam after the spacecraft entered orbit around Jupiter on 5 July.
Image Credit: NASA