Topic: Greenbelt MD
Written by Elizabeth Zubritsky
Greenbelt, MD – On September 8th, NASA’s OSIRIS-REx spacecraft is scheduled to launch for terra incognita: the unknown surface of the near-Earth asteroid Bennu. Like expeditions of old, OSIRIS-REx’s mission includes mapping the exotic terrain it explores.
Bennu is part of the debris left over from the formation of the solar system and is pristine enough to hold clues to that very early history. OSIRIS-REx – which stands for Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer – will study Bennu in detail and collect a sample to send to Earth for in-depth analysis. The mission also will investigate how pressure from sunlight influences the path of this traveling asteroid.
Written by Preston Dyches
Pasadena, CA – Using data from NASA’s Great Observatories, astronomers have found the best evidence yet for cosmic seeds in the early universe that should grow into supermassive black holes.
Researchers combined data from NASA’s Chandra X-ray Observatory, Hubble Space Telescope, and Spitzer Space Telescope to identify these possible black hole seeds. They discuss their findings in a paper that will appear in an upcoming issue of the Monthly Notices of the Royal Astronomical Society.
Written by Nancy Neal Jones
Greenbelt, MD – NASA’s first spacecraft designed to return a piece of an asteroid to Earth arrived Friday, May 20th, at the agency’s Kennedy Space Center in Florida, and has begun final preparations in advance of its September launch.
The Origins, Spectral Interpretation, Resource Identification, Security – Regolith Explorer (OSIRIS-REx) spacecraft will undergo final testing and fueling prior to being moved to its launch pad. The mission has a 34-day launch period beginning on September 8th.
After launch, the OSIRIS-REx spacecraft will travel to the near-Earth asteroid Bennu and retrieve at least 60 grams (2.1 ounces) of pristine surface material and return it to Earth for study.
NASA’s Goddard Space Flight Center
Greenbelt, MD – New findings based on a year’s worth of observations from NASA’s Van Allen Probes have revealed that the ring current – an electrical current carried by energetic ions that encircles our planet – behaves in a much different way than previously understood.
The ring current has long been thought to wax and wane over time, but the new observations show that this is true of only some of the particles, while other particles are present consistently.
Using data gathered by the Radiation Belt Storm Probes Ion Composition Experiment, or RBSPICE, on one of the Van Allen Probes, researchers have determined that the high-energy protons in the ring current change in a completely different way from the current’s low-energy protons.
Written by Karen C. Fox
Greenbelt, MD – Like sending sensors up into a hurricane, NASA has flown four spacecraft through an invisible maelstrom in space, called magnetic reconnection. Magnetic reconnection is one of the prime drivers of space radiation and so it is a key factor in the quest to learn more about our space environment and protect our spacecraft and astronauts as we explore farther and farther from our home planet.
Space is a better vacuum than any we can create on Earth, but it does contain some particles — and it’s bustling with activity. It overflows with energy and a complex system of magnetic fields.
Written by Audrey Haar
Greenbelt, MD – A volcano erupting and spewing ash into the sky can cover nearby areas under a thick coating of ash and can also have consequences for aviation safety. Airline traffic changes due to a recent volcanic eruption can rack up unanticipated expenses to flight cancellations, lengthy diversions and additional fuel costs from rerouting.
Airlines are prudently cautious, because volcanic ash is especially dangerous to airplanes, as ash can melt within an operating aircraft engine, resulting in possible engine failure.
Written by Ellen Gray
Clouds are among the most important mediators of heat reaching Earth’s surface. Where clouds are absent, darker surfaces like the ocean or vegetated land absorb heat, but where clouds occur their white tops reflect incoming sunlight away, which can cause a cooling effect on Earth’s surface.
Written by Bill Steigerwald
Greenbelt, MD – A powerful combination of observations and computer simulations is giving new clues to how the moon got its mysterious “tattoos” — swirling patterns of light and dark found at over a hundred locations across the lunar surface.
“These patterns, called ‘lunar swirls,’ appear almost painted on the surface of the moon,” said John Keller of NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “They are unique; we’ve only seen these features on the moon, and their origin has remained a mystery since their discovery.” Keller is project scientist for NASA’s Lunar Reconnaissance Orbiter (LRO) mission, which made the observations.
NASA Researchers are developing new technologies to discover Earth-like Planets beyond our Solar System
Written by Whitney Clavin
Pasadena, CA – We humans might not be the only ones to ponder our place in the universe. If intelligent aliens do roam the cosmos, they too might ask a question that has gripped humans for centuries: Are we alone?
These aliens might even have giant space telescopes dedicated to studying distant planets and searching for life. Should one of those telescopes capture an image of our blue marble of a planet, evidence of forests and plentiful creatures would jump out as simple chemicals: oxygen, ozone, water and methane.
Written by Kasha Patel and Joy Ng
Greenbelt, MD – Not all raindrops are created equal. The size of falling raindrops depends on several factors, including where the cloud producing the drops is located on the globe and where the drops originate in the cloud.
For the first time, scientists have three-dimensional snapshots of raindrops and snowflakes around the world from space, thanks to the joint NASA and Japan Aerospace Exploration Agency Global Precipitation Measurement (GPM) mission.
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