Washington, D.C. Astronomers detected unusually high quantities of carbon, the basis of all terrestrial life, in an infant solar system around nearby star Beta Pictoris, 63 light-years away. "For years we’ve looked to this early forming solar system as one that might be going through the same processes our own solar system did when the rocky planets, including Earth, were forming," commented lead author Aki Roberge,* who began the research while at Carnegie’s Department of Terrestrial Magnetism. "But we got a big surprise--there is much more carbon gas than we expected. Something very different is going on." The research, published in the June 8, 2006, Nature, suggests that either carbon-rich asteroids or comets, unlike any in our own solar system, have vaporized, or that bodies outgassing carbon-bearing species such as methane contribute the curious carbon excess.
Dusty, gaseous disks around stars are the birthplaces of planetary systems. Carnegie researcher Alycia Weinberger, co-author of the study, explains: "Since we can’t observe our own solar system as it was 4.5 billion years ago, we look at young stars to learn about the evolution of planet-forming disks. Ultimately, we want to understand the environments and processes around other stars that lead to the rise of life."
The new research was made possible by FUSE--NASA’s Far Ultraviolet Spectroscopic Explorer--and data from the Hubble Space Telescope’s imaging spectrograph. Beta Pictoris is almost twice the mass of our Sun and between 8 and 20 million years old. Previous studies indicated that the gas around the star had a composition of elements very similar to that in our own solar system. The new measurements mark the "most complete inventory of gas in any debris disk," and may radically change the picture.
New NASA study improves search for habitable worlds
20.10.2017 | NASA/Goddard Space Flight Center
Physics boosts artificial intelligence methods
19.10.2017 | California Institute of Technology
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
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