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New research shows a black hole-fuelled quasar shining 46 billion times brighter than the Sun is not the lone wolf astronomers once believed. Massachusetts Institute of Technology researchers have found the quasar, PKS 1353-341, is simply so bright it drowns out the light from hundreds of galaxies in a surrounding cluster. Michael McDonald, an assistant professor of physics at MIT’s Kavli Institute of Astrophysics and Space Research, writes in the Astrophysical Journal that the previously unseen cluster is about as massive as 690 trillion suns. For comparison, the Milky Way tips the scales at some 400 billion solar masses.


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The United States' last crewed space mission (it was also the final shuttle flight STS-135) launched from Kennedy Space center in 2011. Since then, US astronauts have hitched rides on Russian rockets. Meanwhile, SpaceX, Boeing and NASA are reviving US spaceflight with the "Commercial Crew Program." A boring name for something that's exciting not only for NASA but also the four gentlemen that are testing (and will eventually be aboard) the Dragon spaceship when it launches. To get to that point, SpaceX has spent years working closely with NASA and with astronauts Bob Behnken and Doug Hurley to get everything ready. The experienced astronauts have spent the past three years sharing their expertise with SpaceX on everything from where to place buttons in the craft and building a chair that works best for reaching escape velocity (the velocity needed to escape the gravitational pull of a celestial body. In this case, Earth), to iterating the design of the rather stylish spacesuit they'll be wearing.


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The Perseids are arguably the most famous annual meteor shower. Silently streaking across the mid-August heavens each summer, it’s a profound and beautiful event for anyone with a dark sky and the discipline to just. Keep. Looking. Up. The often-exquisite shooting stars come from a comet that’s drawing ever closer to Earth. Dangerously close, actually: Radio astronomer Gerrit Verschuur has called Comet 109P/Swift-Tuttle "the single most dangerous object known to humanity." Apparently, our inspiring, transcendent meteor shower may also be the harbinger of humanity’s doom, give or take a few thousand years.


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About 170 years ago, Eta Carinae, one of the brightest, most massive stars in the Milky Way, erupted with a titanic blast, releasing almost as much energy as a supernova explosion and becoming at one point the second brightest star in the night sky. Somehow, the star survived the “Great Eruption”, providing an intriguing mystery for astronomers. Now, studying light from the outburst that rebounded, or “echoed,” off interstellar dust and has only now reached Earth, researchers have found the original explosion created a huge 10-solar-mass cloud of debris expanding 20 times faster than expected – more than 32 million kilometres per hour (20 million mph) – fast enough to travel from Earth to Pluto in just a few days.


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The NASA and ESA Hubble space telescope is on a captivating quest to image all 110 space objects listed in a catalog that originated with French astronomer Charles Messier. Messier's catalog dates back to the 1700s and is full of gorgeous galaxies, fascinating star clusters and stately nebulae. NASA released 12 new Messier catalog Hubble images on March 16. Hubble has now observed 93 of the 110 objects as of early 2018.


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"Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every "superstar," every "supreme leader," every saint and sinner in the history of our species lived there--on a mote of dust suspended in a sunbeam."


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The red planet is making its closest approach to Earth in 15 years. The two planets will be just 35.8 million miles (57.6 million kilometers) apart. Mars is already brighter than usual and will shine even more— and appear bigger. Astronomers expect good viewing through early August.


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How to Watch Friday’s Super-Long Lunar Eclipse Online


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The accumulation of condensation on surface landers and the detection of vast subterranean ice deposits suggest the stuff still lingers in gaseous and solid states. But liquid water has proved more elusive. Evidence to date suggests it flows seasonally, descending steep slopes in transient trickles every Martian summer. The search for a big, enduring reservoir of wet, potentially life-giving H20 has turned up nothing. Until now.


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Follow the SpaceX Iridium-7 launch live


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There is a new radio telescope up and running based in Karoo, South Africa. The MeerKAT (Karoo Array Telescope), as it’s named, operated by the South African Radio Astronomy Observatory, is already producing brilliant images of the super massive black hole that is at our galaxy’s center, 25,000 light years away.


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Mars is closer to Earth and brighter than its been since back in 2003. It’s so bright that photographer Abdul Dremali managed to capture this photo of the planet casting a bright reflection on the ocean as it rose into the night sky.


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The Royal Observatory’s Astronomy Photographer of the Year 2018 shortlist has some truly incredible shots ranging from the ISS passing in front of the Sun to a truly astonishing picture of the solar eclipse. This year the competition received over 4,200 entries from amateurs to seasoned professionals spanning some 91 countries from around the world.


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We are all looking forward to the upcoming lunar eclipse in Europe next week. Therefore we have decided to launch an app sale from Saturday, July 21st to Friday, 27th. The following apps will be reduced: Redshift Compact – Astronomy iOS (0,99 €/0.99 USD): https://itunes.apple.com/de/app/redshift-discover-astronomy/id917569439?mt=8 Redshift – Astronomy iOS (9,99 €/8.99 USD): https://itunes.apple.com/de/app/redshift-astronomy/id390436752?mt=8 Redshift Premium Mac (39,99 €/35.99 USD): https://itunes.apple.com/de/app/redshift-premium-astronomy/id1317255531?l=de&ls=1&mt=12


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A mysterious, ghostly particle that slammed into Earth and lit up sensors buried deep beneath the south pole has been traced back to a distant galaxy that harbours an enormous spinning black hole. Astronomers detected the high-energy neutrino, a kind of subatomic particle, when it tore into the southern Indian Ocean near the coast of Antarctica and carried on until it struck an atomic nucleus in the Antarctic ice, sending more particles flying.


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Blasts of ocean spray that erupt from a moon of Saturn contain complex organic molecules, making it the only place beyond Earth known to harbour crucial constituents for life as we know it. Astronomers detected the compounds in plumes of water and ice that shoot from huge fractures in the south pole of Enceladus, a 300-mile-wide ice ball that orbits Saturn along with 52 other moons. Enceladus stands out among the planet’s natural satellites because it hosts a global water ocean beneath its frozen crust.


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We have just released an updated version of Redshift Premium for Mac. The app is now available in 8 languages.


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Sand dunes often accumulate in the floors of craters. In this region of Lyot Crater, NASA's Mars Reconnaissance Orbiter (MRO) shows a field of classic barchan dunes on Jan. 24, 2018. Just to the south of the group of barchan dunes is one large dune with a more complex structure. This particular dune, appearing like turquoise blue in enhanced color, is made of finer material and/or has a different composition than the surrounding.


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A new multiagency report outlines how the U.S. could become better prepared for near-Earth objects—asteroids and comets whose orbits come within 30 million miles of Earth—otherwise known as NEOs. NASA’s Near-Earth Object Observation Program funds asteroid detection and tracking efforts at observatories across the U.S. and in space, and collaborates with other observatories around the world. The NASA’s Center for Near-Earth Object Studies (CNEOS) at the agency’s Jet Propulsion Laboratory in Pasadena, California, maps and publishes the orbits of all detected objects so that everyone can understand the potential risk. NASA also is studying approaches for deflecting (turning aside) or disrupting (breaking up) asteroids.


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A new study validates Einstein's theory of general relativity in a distant galaxy for the first time. This study supports our current understanding of gravity and provides more evidence for the existence of dark matter and dark energy — two mysterious concepts that scientists know about only indirectly by observing their effects on cosmic objects. Albert Einstein's theory of general relativity, published in 1916, explains how gravity is the result of a concept known as the fabric of space-time. Simply put, the theory predicts how much the mass of an object — in this case, a galaxy — curves space-time.


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Recently, the scientists seem to have begun to master the science and art of cosmos creation. They are applying the laws of physics to a smooth, hot fluid of (simulated) matter, as existed in the infant universe, and seeing the fluid evolve into spiral galaxies and galaxy clusters like those in the cosmos today.


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Mysterious streams of microwaves that come from far across the galaxy have been traced to immense clouds of spinning diamonds that swirl around newly-born stars. Astronomers have been stumped by the strange waves since they were first spotted more than 20 years ago, but now appear to have solved the puzzle after training US and Australian telescopes on rings of dust that circle stars about 500 light years from Earth.


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Nasa’s veteran Curiosity rover has found complex organic matter buried and preserved in ancient sediments that formed a vast lake bed on Mars more than 3bn years ago. The discovery is the most compelling evidence yet that long before the planet became the parched world it is today, Martian lakes were a rich soup of carbon-based compounds that are necessary for life, at least as we know it.


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Massive galaxies like our Milky Way are orbited by satellite dwarf galaxies. Standard cosmological simulations of galaxy formation predict that these satellites should move randomly around their host. Müller et al. examined the satellites of the nearby elliptical galaxy Centaurus A (see the Perspective by Boylan-Kolchin). They found that the satellites are distributed in a planar arrangement, and the members of the plane are orbiting in a coherent direction. This is inconsistent with more than 99% of comparable galaxies in simulations. Centaurus A, the Milky Way, and Andromeda all have highly statistically unlikely satellite systems. This observational evidence suggests that something is wrong with standard cosmological simulations.


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Scientists have spotted one of the most detailed looks at the universe in the history of astronomy. The breakthrough observation allowed scientists to receive radiation from deep in space, and could shed light on the fast radio bursts that are one of the most mysterious signals we have ever received on Earth.




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29. Dezember - 12:25

Neptune1


» von looby

29. Dezember - 11:53

Neptune1


» von looby

14. April - 01:21

Astronomietag 2010


» von Jan Hattenbach

31. März - 08:53

Komet Hyakutake 1996


» von saltu

31. März - 08:45

Analemma


» von saltu

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