A fluctuating tilt in a planet’s orbit does not preclude the possibility of life, according to new research by a team of astronomers. In fact, sometimes it helps because such “tilt-a-worlds,” as astronomers sometimes call them, are less likely than fixed-spin planets to freeze over, as heat from their host star is more evenly distributed.
A space station cargo ship will remain Earthbound for a while longer. With just over an hour remaining, the Space X company called off Monday's planned launch because of a rocket leak. A new launch date was not set; the next opportunity would be Friday. Officials said a helium leak in the first-stage of the unmanned Falcon rocket forced the postponement. The launch already had been delayed a full month for various reasons.
NASA is pressing ahead with Monday's planned launch of a supply ship despite a critical computer outage at the International Space Station, promising the situation is safe. Mission managers decided Sunday to proceed with the countdown for the SpaceX capsule, Dragon, already a month late in delivering more than 2 tons of cargo.
A Purdue Univ. experiment that will test how plant cells sense and respond to different levels of gravity is scheduled to launch aboard the SpaceX Falcon 9 rocket from Cape Canaveral, Fla., on Monday (April 14). Understanding how gravity impacts plants is key for determining the conditions necessary to grow plants in space.
Astronomers at Penn State and other institutions participating in the Sloan Digital Sky Survey have used 140,000 distant quasars to measure the expansion rate of the universe when it was only one-quarter of its present age. This measurement is the best yet of the expansion rate at any epoch in the last 13 billion years during the history of the universe.
In 2005, NASA's Cassini spacecraft sent pictures back to Earth depicting an icy Saturnian moon spewing water vapor and ice from fractures, known as "tiger stripes," in its frozen surface. It was big news that tiny Enceladus was such an active place. Since then, scientists have hypothesized that a large reservoir of water lies beneath that icy surface, possibly fueling the plumes.
New Yale Univ.-led research suggests how and when Earth came to develop one of its most distinct features—rigid tectonic plates—and why Venus, Earth’s twin-like neighbor, never has. Earth has a unique network of shifting plates embedded in its cold and rocky outermost layer, the lithosphere. The motion of these plates drives many Earth processes, while also stabilizing the planet’s climate and enabling life.
A new study of gamma-ray light from the center of our galaxy makes the strongest case to date that some of this emission may arise from dark matter, an unknown substance making up most of the material universe.
The European Space Agency is launching the first of six satellites for a new system designed to better monitor climate change, environmental disasters and catastrophes like floods, volcanic eruptions and earthquakes.
Astronomers are challenging the view that the currently preferred cosmological model of the Universe is correct. They are comparing recent measurements of the cosmic background radiation and galaxy clusters in two independent studies.
After insisting that space relations wouldn't be altered by earthly politics, NASA announced it was severing ties with Russia except for the International Space Station. NASA employees can't travel to Russia or host visitors until further notice. They're also barred from emailing or holding teleconferences with their Russian counterparts because of Russia's actions in Ukraine, according to a memo sent to workers.
Benefited from a rare occultation on June 3, 2013, researchers observed the asteroid Chariklo when it passed by a star that concealed it for several seconds. Although the astronomer planned only to measure its size, they were surprised to discover this “centaur”, which has an unstable orbit that passes through the outer planets, has two thin rings made of ice. It is only the fifth Solar System object to exhibit such a system.
The European Mars rover unveiled Thursday at a "Mars Yard" testing ground in Britain is designed to drill beneath the surface of the Red Planet searching for signs of life. It's been dubbed “Bryan” by its creators, and the plan is to send it to Mars in 2018 as part of the European Space Agency's ExoMars program, an ambitious plan that begins in 2016 with the launch of a Mars orbiter and demonstrator landing module.
Until now, the lone known resident in the region of the solar system beyond Pluto was an oddball dwarf planet spotted in 2003 named Sedna. For years, astronomers hunted in vain for other Sednas in the little-studied fringes of the solar system. Now, they’ve found one: a pink frozen world 7.5 billion miles from the sun. And astronomer think they will find others.
As a planet orbits, its gravity makes its parent star wobble a tiny bit, resulting in slight color changes in the star's light due to the Doppler effect. A high-quality reference spectrum allows scientists to make a comparison to find planets. Now, NIST has made extensive new measurements of thorium, a heavy element often used in emission lamps that help provide that fixed ruler. The work has more than doubled the number of spectral lines.
Using more than two million images collected by NASA’s orbiting Spitzer Space Telescope, a team of Wisconsin scientists has stitched together a dramatic 360-degree portrait of the Milky Way, providing new details of our galaxy’s structure and contents.
The detection of gravitational waves by the BICEP2 experiment at the South Pole supports the cosmic inflation theory of how the universe came to be. The discovery, made in part by Asst. Prof. Chao-Lin Kuo, supports the theoretical work of Stanford Univ.'s Andrei Linde.
Using the VUV Free-Electron Laser FLASH at Deutsches Elektronen-Synchrotron in Hamburg, Germany, Lawrence Livermore National Laboratory researchers were part of a team that took a sneak peek deep into the lower atmospheric layers of giant gas planets such as Jupiter or Saturn.
Although NASA’s Human Research Program has been researching the effects of spaceflight on the human body for decades, the March 7 announcement of 10 investigations for the study of identical twin astronauts Scott and Mark Kelly will provide a broader insight into the subtle effects and changes that may occur in spaceflight as compared to Earth-based environments.
Researchers have theorized about the existence of this large, but unseen celestial body, suspected to lie somewhere beyond the orbit of Pluto. After searching hundreds of millions of objects across our sky, NASA's Wide-Field Infrared Survey Explorer (WISE) has turned up no evidence of the commonly dubbed "Planet X."
Future lunar missions may be fueled by gas stations in space, according to Massachusetts Institute of Technology engineers: A spacecraft might dock at a propellant depot, somewhere between the Earth and the moon, and pick up extra rocket fuel before making its way to the lunar surface.
The Earth’s magnetic field, or magnetosphere, stretches from the planet’s core out into space, where it meets the solar wind, a stream of charged particles emitted by the sun. For the most part, the magnetosphere acts as a shield to protect the Earth from this high-energy solar activity. But when this field comes into contact with the sun’s magnetic field, powerful electrical currents from the sun can stream into Earth’s atmosphere.
The U.S. space agency is planning an ambitious robotic mission to Europa, a Jupiter moon where astronomers speculate there might be some form of life. The space agency set aside $15 million in its 2015 budget proposal to start planning some kind of mission to Europa. No details have been decided yet, but NASA chief financial officer Elizabeth Robinson said Tuesday that it would be launched in the mid-2020s.
One of the concerns for astronauts during future extended spaceflights will be the onslaught of eye-damaging radiation, and plants that contain carotenoids would help mitigate that harm. According to a new study by researchers at the Univ. of Colorado Boulder, exposing leafy vegetables grown during spaceflight to a few bright pulses of light daily could increase the amount of eye-protecting nutrients produced by the plants.
Astronomers at the Univ. of Washington have developed a new method of gauging the atmospheric pressure of exoplanets, or worlds beyond the solar system, by looking for a certain type of molecule. And if there is life out in space, scientists may one day use this same technique to detect its biosignature, the telltale chemical signs of its presence, in the atmosphere of an alien world.