News (Page 910)

Finding Alien Megastructures Around Nearby Pulsars During the 1960s, Freeman Dyson and Nikolai Kardashev captured the imaginations of people everywhere by making some radical proposals. Whereas Dyson proposed that intelligent species could eventually create megastructures to harness the energy of their stars, Kardashev offered a three-tiered classification system for intelligent species based on their ability to harness the energy of their planet, solar system and galaxy, respectively. With missions that are now capable of locating extra-solar planets (i.e. the Kepler Space Observatory) scientists have been on the lookout for signs of possible alien megastructures. Unfortunately, aside from some very arguable results, no concrete evidence hasRead More →

Messier 42 – The Orion Nebula Welcome back to Messier Monday! In our ongoing tribute to the great Tammy Plotner, we take a look at that Great and most brightest of nebulae – the Orion Nebula! During the 18th century, famed French astronomer Charles Messier noted the presence of several “nebulous objects” in the night sky. Having originally mistaken them for comets, he began compiling a list of them so that others would not make the same mistake he did. In time, this list (known as the Messier Catalog) would come to include 100 of the most fabulous objects in the night sky. One ofRead More →

New Estimate Puts the Supernova Killzone Within 50 Light-Years of Earth There are a lot of ways that life on Earth could come to an end: an asteroid strike, global climate catastrophe, or nuclear war are among them. But perhaps the most haunting would be death by supernova, because there’s absolutely nothing we could do about it. We’d be sitting ducks. New research suggest that a supernova’s kill zone is bigger than we thought; about 25 light years bigger, to be exact. Iron in the Ocean In 2016, researchers confirmed that Earth has been hit with the effects from multiple supernovae. The presence of ironRead More →

SpaceX Targeting Twilight Thunder for May 15 Inmarsat Blastoff – Watch Live The Inmarsat-5 F4 satellite is loaded into the SpaceX Falcon 9 rocket and rolled out to Launch Complex 39A. Launch is slated for May 15, 2017. Credit: Inmarsat KENNEDY SPACE CENTER, FL – SpaceX is targeting twilight thunder with the firms Falcon 9 rocketing skyward from the Florida Space Coast on Monday 15 carrying a commercial High-Speed broadband satellite for London based Inmarsat. Blastoff of the Inmarsat-5 Flight 4 communications satellite for commercial broadband provider Inmarsat is slated for early Monday evening, May 15 at 7:21 p.m. EDT (or 23:21 UTC) from SpaceX’sRead More →

NASA Nixes Proposal Adding Crew to First SLS/Orion Deep Space Flight Artist concept of the SLS Block 1 configuration on the Mobile Launcher at KSC. Credit: NASA/MSFC KENNEDY SPACE CENTER, FL – After conducting a thorough review examining the feasibility of adding a two person crew to the first integrated launch of America’s new Space Launch System (SLS) megarocket and Orion capsule on a mission that would propel two astronauts to the Moon and back by late 2019, NASA nixed the proposal during a media briefing held Friday. The announcement to forgo adding crew to the flight dubbed Exploration Mission-1 (EM-1) was made by NASARead More →

Astronomers Find a Rogue Supermassive Black Hole, Kicked out by a Galactic Collision When galaxies collide, all manner of chaos can ensue. Though the process takes millions of years, the merger of two galaxies can result in Supermassive Black Holes (SMBHs, which reside at their centers) merging and becoming even larger. It can also result in stars being kicked out of their galaxies, sending them and even their systems of planets into space as “rogue stars“. But according to a new study by an international team of astronomers, it appears that in some cases, SMBHs could  also be ejected from their galaxies after a mergerRead More →

SpaceX Continues Torrid 2017 Launch Pace With Commercial High-Speed Inmarsat Broadband Satellite on May 15 Inmarsat-5 Flight 4 (I-5 F4) satellite undergoes prelaunch processing for liftoff on SpaceX Falcon 9. Credit: Inmarsat KENNEDY SPACE CENTER, FL – SpaceX is all set to continue their absolutely torrid launch pace in 2017 with a commercial High-Speed broadband satellite for Inmarsat on May 15 following Thursday’s successful completion of a critical static hot-fire test of the first stage. The positive outcome for the static fire test of the first stage engines of the SpaceX Falcon 9 rocket on Thursday afternoon, May 11, paves the path to a MondayRead More →

Asteroid Strikes on Mars Spun Out Supersonic Tornadoes that Scoured the Surface The study of another planet’s surface features can provide a window into its deep past. Take Mars for example, a planet whose surface is a mishmash of features that speak volumes. In addition to ancient volcanoes and alluvial fans that are indications of past geological activity and liquid water once flowing on the surface, there are also the many impact craters that dot its surface. In some cases, these impact craters have strange bright streaks emanating from them, ones which reach much farther than basic ejecta patterns would allow. According to a newRead More →

Weekly Space Hangout – May 12, 2017: James Trefil & Michael E. Summers Present “Exoplanets” Host: Fraser Cain (@fcain) Special Guest: We welcome Michael Summers and James Trefil to the show to discuss their new book, Exoplanets: Diamond Worlds, Super Earths, Pulsar Planets and the New Search for Life Beyond Our Solar System. Fraser will also pick the winners of the copies of this book from all the viewers who entered our giveaway! Guests: Paul M. Sutter (pmsutter.com / @PaulMattSutter) Their stories this week:Cassini to study Saturn’s Hexagon So many Crab nebula jokes, so little time We use a tool called Trello to submit andRead More →

Early Earth Was Almost Entirely Underwater, With Just A Few Islands It might seem unlikely, but tiny grains of minerals can help tell the story of early Earth. And researchers studying those grains say that 4.4 billion years ago, Earth was a barren, mountainless place, and almost everything was under water. Only a handful of islands poked above the surface. Scientists at the Australian National University are behind this study, led by researcher Dr. Antony Burnham. The mineral grains in the study are the oldest rocks ever found. They’re 4.4 billion year old zircon mineral grains from the Jack Hills of Western Australia, where theyRead More →

The Chamaeleon Constellation Welcome back to Constellation Friday! Today, in honor of the late and great Tammy Plotner, we will be dealing with that famous lizard that seems to just fit in everywhere – the Chamaeleon constellation! In the 2nd century CE, Greek-Egyptian astronomer Claudius Ptolemaeus (aka. Ptolemy) compiled a list of all the then-known 48 constellations. This treatise, known as the Almagest, would used by medieval European and Islamic scholars for over a thousand years to come, effectively becoming astrological and astronomical canon until the early Modern Age. In time, this list would come to be expanded as astronomers became aware of more asterismsRead More →

Europa Lander Could Carry a Microphone and “Listen” to the Ice to Find Out What’s Underneath Between the Europa Clipper and the proposed Europa Lander, NASA has made it clear that it intends to send a mission to this icy moon of Jupiter in the coming decade. Ever since the Voyager 1 and 2 probes conducted their historic flybys of the moon in 1973 and 1974 – which offered the first indications of a warm-water ocean – scientists have been eager to peak beneath the surface and see what lies within. Towards this end, NASA has issues a grant to a team of researchers fromRead More →

Rise of the Super Telescopes: Why We Build Them One night 400 years ago, Galileo pointed his 2 inch telescope at Jupiter and spotted 3 of its moons. On subsequent nights, he spotted another, and saw one of the moons disappear behind Jupiter. With those simple observations, he propelled human understanding onto a path it still travels. Galileo’s observations set off a revolution in astronomy. Prior to his observations of Jupiter’s moons, the prevailing belief was that the entire Universe rotated around the Earth, which lay at the center of everything. That’s a delightfully childish viewpoint, in retrospect, but it was dogma at the time.Read More →

Rise of the Super Telescopes: The Large UV Optical Infrared Surveyor (LUVOIR) aka Hubble 2.0 We humans have an insatiable hunger to understand the Universe. As Carl Sagan said, “Understanding is Ecstasy.” But to understand the Universe, we need better and better ways to observe it. And that means one thing: big, huge, enormous telescopes. In this series we’ll look at the world’s upcoming Super Telescopes: The Giant Magellan Telescope The Overwhelmingly Large Telescope The 30 Meter Telescope The European Extremely Large Telescope The Large Synoptic Survey Telescope The James Webb Space Telescope The Wide Field Infrared Survey Telescope The Large UV Optical Infrared SurveyorRead More →

Movie Review – Alien: Covenant Promotional poster for Alien: Covenant. Credit: 20th Century Fox Warning: mild plot spoilers ahead for the upcoming summer film Alien: Covenant, though we plan to focus more on the overall Alien sci-fi franchise and some of the science depicted in the movie. So, are you excited for the 2017 movie season? U.S. Memorial Day weekend is almost upon us, and that means big ticket, explosion-laden sci-fi flicks and reboots/sequels. Lots of sequels. We recently got a chance to check out Alien: Covenant opening Thursday, May 18th as the second prequel and the seventh film (if you count 2004’s Alien vs.Read More →

What is the Universe? What is the Universe? That is one immensely loaded question! No matter what angle one took to answer that question, one could spend years answering that question and still barely scratch the surface. In terms of time and space, it is unfathomably large (and possibly even infinite) and incredibly old by human standards. Describing it in detail is therefore a monumental task. But we here at Universe Today are determined to try! So what is the Universe? Well, the short answer is that it is the sum total of all existence. It is the entirety of time, space, matter and energyRead More →

Astronomy Cast Ep. 446: Animals in Space Pt. 2: Mice and Other Small Animals Last week we talked about how the smallest creatures behave in space, but now we move up in size a little to small animals, like mice. What missions have they flown on, and how does microgravity affect their biology? Visit the Astronomy Cast Page to subscribe to the audio podcast! We usually record Astronomy Cast as a live Google+ Hangout on Air every Friday at 1:30 pm Pacific / 4:30 pm Eastern. You can watch here on Universe Today or from the Astronomy Cast Google+ page. The post Astronomy Cast Ep.Read More →

Stunning View of the Crab Nebula Just Got Five Times Better Images of the Crab Nebula are always a treat because of it has such intriguing and varied structure. Also, just knowing that this stellar explosion was witnessed and recorded by people on Earth more than 900 years ago (with the supernova visible to the naked eye for about two years) gives this nebula added fascination. A new image just might be the biggest Crab Nebula treat ever, as five different observatories combined forces to create an incredibly detailed view, with stunning details of the nebula’s interior region. Data from telescopes spanning nearly the entireRead More →

Saturn’s Hexagon Will be the Star of the Cassini Finale The Cassini spacecraft is nearing the end of its lifespan. This September, after spending the past twenty years in space – twelve and a half of which were dedicated to studying Saturn and its system of moons – the probe will be crash into Saturn’s atmosphere. But between now and then, the probe will be making its “Grand Finale” – the final phase of its mission where it will dive between the planet and its rings 22 times. In addition to exploring this region of Saturn (something no other mission has done), the probe willRead More →

Carnival of Space #508 This week’s Carnival of Space is hosted by Brad Rogers at The Evolving Planet blog. Click here to read Carnival of Space #508. And if you’re interested in looking back, here’s an archive to all the past Carnivals of Space. If you’ve got a space-related blog, you should really join the carnival. Just email an entry to carnivalofspace@gmail.com, and the next host will link to it. It will help get awareness out there about your writing, help you meet others in the space community – and community is what blogging is all about. And if you really want to help out,Read More →