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| Astronomy articles |
Stardust formed close to Sun
Samples of the material picked up during the NASA Stardust mission indicate that parts of the comet Wild 2 actually formed in an area close to the sun.
Super-computer could throw light on 'mysterious' dark energy
Cosmologists have run a series of huge computer simulations of the Universe that could ultimately help solve the mystery of dark energy.
Mit, harvard offer solution to mars enigma
Planetary scientists have puzzled for years over an apparent contradiction on Mars. Abundant evidence points to an early warm, wet climate on the red planet, but there's no sign of the widespread carbonate rocks, such as limestone, that should have formed in such a climate. -FULL TEXT:
Radio telescopes' precise measurements yield rich scientific payoffs
Having the sharpest pictures always is a big advantage, and a sophisticated radio-astronomy technique using continent-wide and even intercontinental arrays of telescopes is yielding extremely valuable scientific results in a wide range of specialties.
Astronomers are first to successfully predict extra-solar planet
Astronomers, including one at The University of Arizona, have successfully predicted the existence of an unknown planet, the first since Neptune was predicted in the 1840s. This planet, however, is outside our own solar system, circling a star a little more than 200 light years from Earth.
Weird object may be result of colliding protoplanets
Something bizarre orbiting a young, failed star 170 light-years from Earth may be the progeny of two protoplanets that collided and merged, astronomers announced at the American Astronomical Society meeting in Austin, Texas.
Two unusual older stars giving birth to second wave of planets
Hundreds of millions — or even billions — of years after planets would have initially formed around two unusual stars, a second wave of planetesimal and planet formation appears to be taking place, UCLA astronomers and colleagues believe.
Physicists uncover new solution for cosmic collisions
It turns out that our math teachers were right: being able to solve problems without a calculator does come in handy in the "real" world. Two theoretical physicists at Rensselaer Polytechnic Institute have used what they call "pen-and-paper math" to describe the motion of interstellar shock waves — violent events associated with the birth of stars and planets.
Massive gas cloud speeding toward collision with milky way
A giant cloud of hydrogen gas is speeding toward a collision with our Milky Way Galaxy, and when it hits -- in less than 40 million years -- it may set off a spectacular burst of stellar fireworks.
Arecibo telescope finds critical ingredients for the soup of life in a galaxy far, far away
Astronomers from Arecibo Observatory radio telescope in Arecibo, Puerto Rico, have detected for the first time the molecules methanimine and hydrogen cyanide -- two ingredients that build life-forming amino acids -- in a galaxy some 250 million light years away.
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Asu research solves solar system quandary
Quick: What's the order of the planets in the solar system? Need a little help? Maybe the following mnemonic rings a bell: "My Very Educated Mother Just Served Up Nine Pizzas." It's useful for remembering the order of the planets today, but it wouldn't have been as useful in the past, and not just because the International Astronomical Union demoted Pluto to "dwarf planet" last year.
Unusual supernovae may reveal intermediate-mass black holes in globular clusters
A strange and violent fate awaits a white dwarf star that wanders too close to a moderately massive black hole. According to a new study, the black hole's gravitational pull on the white dwarf would cause tidal forces sufficient to disrupt the stellar remnant and reignite nuclear burning in it, giving rise to a supernova explosion with an unusual appearance. Observations of such supernovae could confirm the existence of intermediate-mass black holes, currently the subject of much debate among astronomers.
Hyperfast star proven to be alien
A young star is speeding away from the Milky Way so fast that astronomers have been puzzled by where it came from; based on its young age it has traveled too far to have come from our galaxy. Now by analyzing its velocity, light intensity, and for the first time its tell-tale elemental composition, Carnegie astronomers Alceste Bonanos and Mercedes López-Morales, and collaborators Ian Hunter and Robert Ryans from Queen's University Belfast have determined that it came from our neighboring galaxy, the Large Magellanic Cloud (LMC). The result suggests that it was ejected from that galaxy by a yet-to-be-observed massive black hole.
Gas finger points to galaxies future
Like a fork piercing a fried egg, a giant finger of hydrogen gas is poking through our Milky Way Galaxy from outside, astronomers using CSIRO radio telescopes at Parkes and Narrabri have found.
Astronomers map full extent of mercury's comet-like tail
Boston University astronomers released new images of Mercury that capture both the source regions of and, for the first time, the extraordinary length of the planet's comet-like tail.
International team discovers new solar system with scaled-down versions of jupiter and saturn
Harnessing Lawrence Livermore's pioneering work in gravitational microlensing, supercomputer modeling and adaptive optics, scientists have found two planets in a solar system much like our very own.
Arecibo observatory astronomers discover first near-earth triple asteroid just 7 million miles away
Once considered just your average single asteroid, 2001 SN263 has now been revealed as the first near-Earth triple asteroid ever found. The asteroid -- with three bodies orbiting each other -- was discovered this week by astronomers at the radar telescope at the National Science Foundation's (NSF) Arecibo Observatory in Puerto Rico.
Many, perhaps most, nearby sun-like stars may form rocky planets
Astronomers have discovered that terrestrial planets might form around many, if not most, of the nearby sun-like stars in the disk of our galaxy. These new results suggest that worlds with potential for life might be more common than thought.
World-wide effort bringing ALMA telescope into reality
In the thin, dry air of northern Chile's Atacama Desert, at an altitude of 16,500 feet, an amazing new telescope system is taking shape, on schedule to provide the world's astronomers with unprecedented views of the origins of stars, galaxies, and planets. The Atacama Large Millimeter/submillimeter Array (ALMA) will open an entirely new "window" on the Universe, allowing scientists to unravel longstanding and important astronomical mysteries.
Killer electrons surf celestial tsunamis
It's as if we took a trip into space with our best friends, and they turned into mutants and attacked us. Electrons are the best friends we've ever had from the subatomic world. We harness their flow as electricity to power all of modern life -- everything from cell phones and laptops to light bulbs. In space, however, electrons can turn against us. Boosted to almost the speed of light, "killer electrons" can knock out computers, pierce spacesuits, and damage the tissues of astronauts. New research using NASA's STEREO spacecraft is discovering exactly how this happens.
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| Quotes | By convention!
cussed Tom airily.
Cmon Scully... Itll be a nice trip through the woods-Fox Mulder
But what ... is it good for?
Engineer at IBM, 1968, commenting on the microchip.
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