Black holes are known for sucking in matter, but researchers find they can shoot it out as well. Observations of a black hole called H1743-322, which harbors five to 10 times the mass of the sun and is located about 28,000 light-years from Earth, revealed it apparently pulled matter off a companion star, then spat some of it back out as gigantic "bullets" of gas moving at nearly a quarter the speed of light.
When galaxies collide, black holes can get kicked away from the site of the crash to roam freely through space. The first known such rogue black hole, SDSSJ0927+2943, may be approximately 600 million times the mass of the sun and hurtle through space at a whopping 5.9 million mph (9.5 million kph). Hundreds of rogue black holes might wander the Milky Way.
The galaxy NGC3393 includes two active black holes (shown in inset) that are thought to result from the galaxy's merger with a smaller companion. Credit: X-ray: NASA/CXC/SAO/G.Fabbiano et al; Optical: NASA/STScI
SOLAR ACTIVITY: The most active region on the solar disk today is emerging sunspot AR1625. It is crackling with C-class solar flares, like this one (C4.6) recorded on Nov. 29th by NASA's Solar Dynamics Observatory. The eruption did not hurl a CME into space. Neither Earth nor any other planet will be affected.
Solar magnetism - National Geographic A composite picture shows what the sun's atmosphere looked like on Wednesday, as seen in three different wavelengths of light. One of three main instruments on the orbiting observatory, the AIA takes pictures of the sun in ten wavelengths every ten seconds. Overlaying several such images can show how magnetic events, such as prominence eruptions and coronal mass ejections, generate motion across the solar orb.