Space

Black Hole in Milky Way Wakes Up After 26 Years (Video)

Astronomers have been observing the recent activity of V404 Cygni, a system consisting of a black hole and companion star, which had been dormant for the past 26 years. (AOL Screenshot)
Astronomers have been observing the recent activity of V404 Cygni, a system consisting of a black hole and companion star, which had been dormant for the past 26 years. (AOL Screenshot)

In space, a dormant system can reactivate at any time, even after decades of inactivity. One recent example is the reawakening of the V404 Cygni...




  • Black holes don’t deserve their bad reputation, says study. (NASA/Wikimedia Commons)

    Don’t Fear Falling Into a Black Hole—You May Live on as a Hologram

    In the movie Interstellar, the main character Cooper escapes from a black hole in time to see his daughter Murph in her final days. Some... Read more

  • "We are seeing the quasars in their teenage years, when they are growing quickly and all messed up," says Eilat Glikman. (European Southern Observatory/CC BY 2.0)

    Hubble Confirms: Quasars Born From Galaxy Crash

    Quasars emit a light as bright as that of 1 trillion stars. Scientists think they get their energy from supermassive black holes. But where do... Read more

  • Artist's impression of the European Space Agency (ESA) probe Rosetta with Mars in the background. A European comet-chasing spacecraft is set for a nail-biting close encounter this weekend with Mars. The billion-euro (1.3-billion-dollar) probe Rosetta will come within 250 kilometers (156 miles) of the Red Planet's surface, using Martian gravity to correct its course in one of the longest and costliest treks in the history of unmanned space exploration. The European Space Agency (ESA) probe, launched in March 2004, is designed to rendezvous with Comet Churyumov-Gerasimenko in 2014 after a voyage of 7.1 billion kilometers (4.4 billion miles). It will send a refrigerator-sized lab, called Philae, to the comet's surface to investigate the rock's chemistry. (C. Carreau/ESA/AFP/Getty Images)

    Could Methane in Meteorites Feed Life on Mars?

    Traces of methane have been discovered in Martian meteorites, causing researchers to speculate if methane could feed microbe-like creatures on the Red Planet. Scientists examined... Read more

  • Veiled beauty holds many secrets. (MMT/Flickr, CC0 1.0)

    Huge Dust Cloud Discovered Around the Moon—but ‘Lunar Glow’ Remains a Mystery

    Astronauts on the early Apollo missions orbiting over to the dark side of the moon were surprised to discover a mysterious, bright crescent of light... Read more

  • "On Europa it won't just be a lake. There's an ocean that goes around the entire sphere and there may be more water in that ocean than in our oceans. Maybe twice as much. We want to know exactly where that ocean is," says William McKinnon. (NASA/JPL-Caltech/SETI Institute)

    Will NASA Mission Find a Salty Ocean on Europa?

    Scientists believe Jupiter’s moon Europa may have a global ocean beneath an outer shell of ice—an ocean that could be hospitable to life. NASA is... Read more

  • This artist impression from Dec. 2013 by ESA /ATG medialab , publicly provided by the European Space Agency, ESA, shows Rosetta’s lander Philae (front view) on the surface of comet 67P/Churyumov-Gerasimenko.  (ESA/ATG medialab/ESA via AP)

    Spacecraft That Landed on Comet Finally Wakes Up

    BERLIN—To scientists’ relief and delight, the Philae spacecraft that landed on a comet last fall has woken up and communicated with Earth after seven long... Read more

  • Civilian passengers of the Airbus A330 Zero-G, who are not astronauts nor scientists, enjoy the weightlessness, on March 15, 2013, during the first zero gravity flight for paying passengers in Europe. (Mehdi Fedouach/AFP/Getty Images)

    Swiss University to Offer Zero-Gravity Flights

    The University of Zurich will become the second place in Europe to carry out zero-gravity flights in order to study the effects of a weightless... Read more

  • A 3D visualisation of the plasma tubes conforming to the Earth’s magnetic field. (CAASTRO / Mats Björklund)

    How an Undergraduate Discovered Tubes of Plasma in the Sky

    The discovery by an undergraduate student of tubes of plasma drifting above Earth has made headlines in the past few days. Many people have asked... Read more

  • The International Space Station (ISS) crew rest after their landing, in the Russian Soyuz TMA-15M space capsule seen behind, with Russian cosmonaut Anton Shkaplerov, centre, U.S. astronaut Terry Virts, left, and Italian astronaut Samantha Cristoforetti, in remote area outside the town of Dzhezkazgan, Kazakhstan, on Thursday, June 11, 2015. (AP Photo/Ivan Sekretarev)

    3 Space Station Astronauts Safely Return to Earth

    DZHEZKAZGAN, Kazakhstan—A three-person crew from the International Space Station landed safely in the steppes of Kazakhstan on Thursday after a longer-than-expected orbital stint. NASA astronaut... Read more

  • Researchers have found deposits of impact glass preserved in Martian craters like Alga (above) using data from NASA's Compact Reconnaissance Imaging Spectrometer for Mars (CRISM). Green indicates the presence of glass. (Blues are pyroxene; reds are olivine.) (NASA/JPL-Caltech/JHUAPL/University of Arizona)

    Glass on Mars Could Hold Clues to Ancient Life

    Researchers have used satellite data to detect deposits of glass within impact craters on Mars. Though formed in the searing heat of a violent impact,... Read more

  • This illustration provided by NASA/JPL/Mark Showalter, SETI Institute depicts Pluto and its five moons from a perspective looking away from the sun. (NASA/JPL/Mark Showalter, SETI Institute via AP)

    Solar System’s Weirdest Dance Scene: The Moons Around Pluto

    WASHINGTON—There’s a chaotic dance going on at the far end of our solar system, involving Pluto and five of its closest friends, a new study... Read more

  • Space X's Falcon 9 rocket launches on January 10, 2015 as it heads to space from pad 40 at Cape Canaveral, Florida. ( BRUCE WEAVER/AFP/Getty Images)

    Watch This GoPro Footage of a SpaceX Rocket Falling Back to Earth

    The internet archives abound with videos of space rocket launches and shots of the interior of the International Space Station. What’s been missing were videos... Read more

  • An artist's rendition of the Giant Magellan Telescope (Giant Magellan Telescope Organization)

    New Telescope Will Be Able to See Back Almost to the Big Bang

    Financiers have given the green light for construction to begin on the Giant Magellan Telescope (GMT), which will become the world’s largest—and most accurate—tower telescope... Read more

  • This image of the giant, active galaxy NGC 1275 was taken using the Hubble Space Telescope in July and August of  2006. (NASA/ESA via Getty Images)

    If the Universe Is So Big, Why Haven’t We Found Aliens Yet? (Video)

    In the 19th century, a long-standing problem in cosmology was that the sky was curiously dark at night. If the universe is infinitely large, and... Read more

  • The RoboSimian was designed to do rescue mission work that are too dangerous for humans to perform. (JPL-Caltech)

    NASA Built a Robot Monkey for Rescue Missions (Video)

    Starting June 5, Defense Advanced Research Projects Agency (DARPA) will host a two-day robotics contest in which 25 teams from all over the world square... Read more

  • Elon Musk, CEO of Space Exploration Technologies Corp, speaks during a news conference at the National Press Club April 5, 2011 in Washington, DC. (Brendan Smialowski/Getty Images)

    Elon Musk Only Wanted a Greenhouse on Mars but Ended Up Building Rockets Instead

    In 2001, before Elon Musk had founded Tesla and SpaceX, he was one of the largest stakeholders in PayPal. The company hadn’t gone public yet,... Read more


    Top