A laboratory experiment at NASA's Jet Propulsion Laboratory, Pasadena, Calif., simulating the atmosphere of Saturn's moon Titan suggests complex organic chemistry that could eventually lead to the building blocks of life extends lower in the atmosphere than previously thought. The results now point out another region on the moon that could brew up prebiotic materials.
Following up on Wednesday’s surprise announcement that a cosmic ray detector on board the International Space Station had possibly made the first instrumented detection of dark matter, an article from the U.S. Department of Energy describes the methodology behind the discovery and what lies ahead for researchers.
As the shapes of galaxies go, the spiral disk—with its characteristic pinwheel profile—is by far the most pedestrian. But despite their common morphology, how galaxies like ours get and maintain their characteristic arms has proved to be an enduring puzzle in astrophysics. How do the arms of spiral galaxies arise? Do they change or come and go over time? The answers to these and other questions are now coming into focus as researchers capitalize on powerful new computer simulations to follow the motions of as many as 100 million “stellar particles” as gravity and other astrophysical forces sculpt them into familiar galactic shapes.
A new look at conditions after a Manhattan-sized asteroid slammed into a region of Mexico in the dinosaur days indicates the event could have triggered a global firestorm that would have burned every twig, bush, and tree on Earth and led to the extinction of 80% of all Earth’s species, says a new University of Colorado Boulder study.
The SpaceX Dragon capsule returned to Earth on Tuesday with a full science load from the International Space Station—and a bunch of well-used children's Legos. The privately owned cargo ship splashed down in the Pacific right on target, 250 miles off the coast of Mexico's Baja Peninsula, five hours after leaving the orbiting lab. The California-based SpaceX confirmed the Dragon's safe arrival via Twitter.
The SpaceX Dragon capsule returned to Earth on Tuesday with a full science load from the International Space Station. The privately owned cargo ship splashed down in the Pacific, off the coast of Mexico's Baja Peninsula, five hours after leaving the orbiting laboratory. The California-based SpaceX confirmed the Dragon's safe arrival via Twitter.
A Boeing 787 with a redesigned battery system made a 2-hour test flight on Monday, and the company said the event "went according to plan." The test flight was an important step in Boeing Co.'s plan to convince safety regulators to let airlines resume using the plane, which the company calls the Dreamliner.
Boeing's comments about the smoldering batteries on its 787 have annoyed the National Transportation Safety Board. Boeing gave its own account of two battery incidents, which included a fire, at a detailed press briefing in Tokyo last week. The problem is that the NTSB is still investigating the incidents. Boeing is a party to the investigation, meaning it provides technical experts and, in effect, gets a seat at the table as investigators try to sort out what happened.
The Big Bang theory says the visible portion of the universe was smaller than an atom when, in a split second, it exploded, cooled and expanded rapidly, much faster than the speed of light. The European Space Agency's Planck space probe has looked back at the afterglow of the Big Bang, and results released today have now added about 80 million years to the universe's age, putting it 13.81 billion years old.
Rusted pieces of two Apollo-era rocket engines that helped boost astronauts to the moon have been fished out of the murky depths of the Atlantic by Amazon.com CEO Jeff Bezos. A privately funded expedition led by Bezos raised the main engine parts during three weeks at sea, about 360 miles from Cape Canaveral. The engine parts were resting nearly 3 miles deep in the Atlantic
After taking measurements of sudden, drastic changes in radiation levels, researchers have reported that NASA’s Voyager 1 spacecraft, now more than 11 billion miles from the Sun, left the heliosphere dominated by the Sun and has passed outside our solar system. Anomalous cosmic rays, which are cosmic rays trapped in the outer heliosphere, all but vanished, dropping to less than 1% of previous amounts.
NASA's twin GRAIL (Gravity Recovery and Interior Laboratory) spacecraft went out in a blaze of glory Dec. 17, 2012, when they were intentionally crashed into a mountain near the moon's north pole. GRAIL had company—NASA's Lunar Reconnaissance Orbiter (LRO) mapping satellite was orbiting the moon as well. With just three weeks notice, the LRO team scrambled to get LRO in the right place at the right time to witness GRAIL's fiery finale
A team of international scientists, including a Lawrence Livermore National Laboratory astrophysicist, has made the most detailed examination yet of the atmosphere of a Jupiter-size like planet beyond our solar system. The finding provides astrophysicists with additional insight into how planets are formed.
Shining in the infrared with the energy of a trillion suns and producing a thousand new suns per year, newly discovered “starburst galaxies” represent what the most massive galaxies in our cosmic neighborhood looked like in their star-making youth. The discovery of these “abnormal” galaxies was recently made by the new Atacama Large Millimeter Array in Chile, which was formally dedicated this week.
Life as we know it is based upon the elements of carbon and oxygen. Now a team of physicists, including one from North Carolina State University, is looking at the conditions necessary to the formation of those two elements in the universe. They’ve found that when it comes to supporting life, the universe leaves very little margin for error.
Drilling into a rock near its landing spot, the Curiosity rover has answered a key question about Mars: The red planet long ago harbored some of the ingredients needed for primitive life to thrive. Topping the list is evidence of water and basic elements that teeny organisms could feed on, scientists said Tuesday.
The Mars rover Curiosity drilled into its first rock a month ago. Now scientists will reveal what's inside. Gathering at NASA headquarters Tuesday, the rover team will detail the minerals and chemicals found in a pinch of ground-up rock. The results come seven months after Curiosity made a dramatic landing in an ancient crater near the equator.
A pair of newly discovered stars is the third-closest star system to the Sun, according to a recent paper published by a Penn State University astrophysicist. At 6.5 light years, the duo is the closest star system discovered since 1916, and is expected to attract considerable attention from planet hunters.
NASA’s Martian rover hunkered down Wednesday after the sun unleashed a blast that raced toward Mars. While Curiosity was designed to withstand punishing space weather, its handlers decided to power it down as a precaution since it suffered a recent computer problem. While the hardy rover slept, the Opportunity rover and two NASA spacecraft circling overhead carried on with normal activities.
The Hubble constant is a fundamental quantity that measures the current rate at which our universe is expanding; it is critical for gauging the age and size of our universe. One of the largest uncertainties plaguing past measurements of the Hubble constant has involved the distance to the Large Magellanic Cloud, our nearest neighboring galaxy. A team of astronomers have now managed to improve the measurement of the distance to our nearest neighbor galaxy and, in the process, refine the calculation that helps measure the expansion of the universe.
Chemists have recently shown that conditions in space are capable of creating complex dipeptides—linked pairs of amino acids—that are essential building blocks shared by all living things. The discovery opens the door to the possibility that these molecules were brought to Earth aboard a comet or possibly meteorites, catalyzing the formation of proteins (polypeptides), enzymes and even more complex molecules, such as sugars, that are necessary for life.
A private Earth-to-orbit delivery service made good on its latest shipment to the International Space Station on Sunday, overcoming mechanical difficulty and delivering a ton of supplies with high-flying finesse. The Dragon's arrival couldn't have been sweeter—and not because of the fresh fruit on board for the six-man station crew. Coming a full day late, the 250-mile-high linkup above Ukraine culminated a two-day chase that got off to a shaky, almost dead-ending start.
A commercial cargo ship rocketed toward the International Space Station on Friday under a billion-dollar contract with NASA that could lead to astronaut rides in just a few years. Launch controllers applauded and gave high-fives to one another once the spacecraft safely reached orbit. The rocket successfully separated from the white Dragon capsule, which contains more than a ton of food, tools, computer hardware, and science experiments.
NASA's Fermi Gamma-ray Space Telescope orbits our planet every 95 minutes, building up increasingly deeper views of the universe with every circuit. Its wide-eyed Large Area Telescope (LAT) sweeps across the entire sky every three hours, capturing gamma rays from sources across the universe. A Fermi scientist has transformed LAT data of a famous pulsar into a mesmerizing movie that visually encapsulates the spacecraft's complex motion.
Boeing CEO Ray Conner has met with Japan's transport minister and other officials in Tokyo to explain his company's proposal for resolving problems with the 787 Dreamliner's lithium-ion batteries that have kept the aircraft grounded for over a month.