Astronomy News & Research
|Soil deep in a crater dating to some 3.7 billion years ago contains evidence that Mars was once much warmer and wetter, says University of Oregon geologist Gregory Retallack, based on images and data captured by the rover Curiosity. ...> Full Article|
Every full moon, Landsat 8 turns its back on Earth. As the satellite's orbit takes it to the nighttime side of the planet, Landsat 8 pivots to point at the moon. It scans the distant lunar surface multiple times, then flips back around to continue its task of collecting land-cover information of the sunny side of Earth below.
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|Astronomers analyzing a long-lasting blast of high-energy light observed in 2013 report finding features strikingly similar to those expected from an explosion from the universe's earliest stars. If this interpretation is correct, the outburst validates ideas about a recently identified class of gamma-ray burst and serves as a stand-in for what future observatories may see as the last acts of the first stars. ...> Full Article|
|One of the great, unanswered questions for space weather scientists is just what creates two gigantic donuts of radiation surrounding Earth, called the Van Allen radiation belts. Recent data from the Van Allen Probes -- two nearly identical spacecraft that launched in 2012 -- address this question. ...> Full Article|
|The most detailed global map yet made of Martian surface properties is the result of a joint project between Arizona State University and the US Geological Survey. ...> Full Article|
|EPFL researchers have a better understanding of the asteroid Vesta and its internal
structure, thanks to numerical simulations and data from the space mission Dawn. Their
findings, published today in Nature, question contemporary models of rocky planet formation,
including that of Earth. ...> Full Article|
|On July 14, 2014, a sounding rocket will be ready to launch from White Sands Missile Range, N.M., a little before noon local time. The Degradation Free Spectrometers experiment will have six minutes to observe the extreme ultraviolet and soft X-rays streaming from the sun, in order to measure the sun's total energy output, known as irradiance, in these short wavelengths. ...> Full Article|
|NASA's Hubble Space Telescope has photographed an unusual structure 100,000 light years long, which resembles a corkscrew-shaped string of pearls and winds around the cores of two colliding galaxies. ...> Full Article|
|Meet the seven new dwarf galaxies.
Yale University astronomers, using a new type of telescope made by stitching together telephoto lenses, recently discovered seven celestial surprises while probing a nearby spiral galaxy. The previously unseen galaxies may yield important insights into dark matter and galaxy evolution, while possibly signaling the discovery of a new class of objects in space. ...> Full Article|
|Stars forming like a string of blue pearls along two elliptical galaxies could be the result of a galactic merger, according to an international team of astronomers. The structure could reveal rare insights about elliptical galaxies. Scientists from Rochester Institute of Technology helped analyze data from the Hubble Space Telescope showing elliptical galaxies coalescing at the core of a dense galaxy cluster. The study is part of a program sponsored by the Hubble Space Telescope. ...> Full Article|
|The discovery of a split-second burst of radio waves by scientists using the Arecibo radio telescope in Puerto Rico provides important new evidence of mysterious pulses that appear to come from deep in outer space. ...> Full Article|
|A new technique for measuring the age of a star using its spin -- gyrochronology -- is coming into its own. Today astronomers are presenting the gyrochronological ages of 22 sun-like stars. Before this, only two sun-like stars had measured spins and ages. ...> Full Article|
|The Universe is filled with objects springing to life, evolving and dying explosive deaths. This new image from the NASA/ESA Hubble Space Telescope captures a snapshot of some of this cosmic movement. Embedded within the egg-shaped blue ring at the centre of the frame are two galaxies. These galaxies have been found to be merging into one and a 'chain' of young stellar superclusters are seen winding around the galaxies' nuclei. ...> Full Article|
Northwestern University professor Manijeh Razeghi and her group engineered a new technology that can detect very long wavelength infrared light.
...> Full Article
|As anybody who has started a campfire by rubbing sticks knows, friction generates heat. Now, computer modeling by NASA scientists shows that friction could be the key to survival for some distant Earth-sized planets traveling in dangerous orbits. ...> Full Article||