Saturday, August 31, 2013

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


NASA Mars rover views eclipse of the sun by Phobos

Posted: 30 Aug 2013 06:26 AM PDT

Images taken with a telephoto-lens camera on NASA's Mars rover Curiosity catch the larger of Mars' two moons, Phobos, passing directly in front of the sun -- the sharpest images of a solar eclipse ever taken at Mars.

Researchers a step closer to finding cosmic ray origins

Posted: 30 Aug 2013 06:16 AM PDT

The origin of cosmic rays in the universe has confounded scientists for decades. But new information that may help unravel the longstanding mystery of exactly how and where they are produced.

ScienceDaily: Cosmic Rays News

ScienceDaily: Cosmic Rays News


Researchers a step closer to finding cosmic ray origins

Posted: 30 Aug 2013 06:16 AM PDT

The origin of cosmic rays in the universe has confounded scientists for decades. But new information that may help unravel the longstanding mystery of exactly how and where they are produced.

Ultracold big bang experiment successfully simulates evolution of early universe

Posted: 29 Aug 2013 06:28 AM PDT

Physicists have reproduced a pattern resembling the cosmic microwave background radiation in a laboratory simulation of the Big Bang, using ultracold cesium atoms in a vacuum chamber.

Friday, August 30, 2013

ScienceDaily: Black Holes News

ScienceDaily: Black Holes News


Why super massive black holes consume less material than expected

Posted: 29 Aug 2013 11:51 AM PDT

Astronomers have solved the mystery of why most super massive black holes have such a low accretion rate -- that is, they feed on very little of the available gases, instead acting as if they are on a severe diet.

NASA's Chandra Observatory catches giant black hole rejecting material

Posted: 29 Aug 2013 11:23 AM PDT

Astronomers using NASA's Chandra X-ray Observatory have taken a major step in explaining why material around the giant black hole at the center of the Milky Way Galaxy is extraordinarily faint in X-rays. This discovery holds important implications for understanding black holes.

ScienceDaily: Cosmic Rays News

ScienceDaily: Cosmic Rays News


Why super massive black holes consume less material than expected

Posted: 29 Aug 2013 11:51 AM PDT

Astronomers have solved the mystery of why most super massive black holes have such a low accretion rate -- that is, they feed on very little of the available gases, instead acting as if they are on a severe diet.

NASA's Chandra Observatory catches giant black hole rejecting material

Posted: 29 Aug 2013 11:23 AM PDT

Astronomers using NASA's Chandra X-ray Observatory have taken a major step in explaining why material around the giant black hole at the center of the Milky Way Galaxy is extraordinarily faint in X-rays. This discovery holds important implications for understanding black holes.

NASA's Hubble sees a cosmic caterpillar

Posted: 29 Aug 2013 09:34 AM PDT

The light-year-long knot of interstellar gas and dust, seen in a new Hubble photo, resembles a caterpillar on its way to a feast. Harsh winds from extremely bright stars are blasting ultraviolet radiation at this 'wanna-be' star and sculpting the gas and dust into its long shape.

ScienceDaily: Galaxies News

ScienceDaily: Galaxies News


Why super massive black holes consume less material than expected

Posted: 29 Aug 2013 11:51 AM PDT

Astronomers have solved the mystery of why most super massive black holes have such a low accretion rate -- that is, they feed on very little of the available gases, instead acting as if they are on a severe diet.

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


Why super massive black holes consume less material than expected

Posted: 29 Aug 2013 11:51 AM PDT

Astronomers have solved the mystery of why most super massive black holes have such a low accretion rate -- that is, they feed on very little of the available gases, instead acting as if they are on a severe diet.

NASA's Chandra Observatory catches giant black hole rejecting material

Posted: 29 Aug 2013 11:23 AM PDT

Astronomers using NASA's Chandra X-ray Observatory have taken a major step in explaining why material around the giant black hole at the center of the Milky Way Galaxy is extraordinarily faint in X-rays. This discovery holds important implications for understanding black holes.

NASA's Hubble sees a cosmic caterpillar

Posted: 29 Aug 2013 09:34 AM PDT

The light-year-long knot of interstellar gas and dust, seen in a new Hubble photo, resembles a caterpillar on its way to a feast. Harsh winds from extremely bright stars are blasting ultraviolet radiation at this 'wanna-be' star and sculpting the gas and dust into its long shape.

ScienceDaily: Stars News

ScienceDaily: Stars News


NASA's Hubble sees a cosmic caterpillar

Posted: 29 Aug 2013 09:34 AM PDT

The light-year-long knot of interstellar gas and dust, seen in a new Hubble photo, resembles a caterpillar on its way to a feast. Harsh winds from extremely bright stars are blasting ultraviolet radiation at this 'wanna-be' star and sculpting the gas and dust into its long shape.

Thursday, August 29, 2013

NuSTAR Delivers the X-Ray Goods

JPL/NASA News

News release: 2013-264                                                                    Aug. 29, 2013

NuSTAR Delivers the X-Ray Goods

                   NuSTAR Delivers the X-Ray Goods

The full version of this story with accompanying images is at:
http://www.jpl.nasa.gov/news/news.php?release=2013-264&cid=release_2013-264

NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, is giving the wider astronomical community a first look at its unique X-ray images of the cosmos. The first batch of data from the black-hole hunting telescope is publicly available today, Aug. 29, via NASA's High Energy Astrophysics Science Archive Research Center, or HEASARC.

"We are pleased to present the world with NuSTAR's first look at the sky in high-energy X-rays with a true focusing telescope," said Fiona Harrison, the mission's principal investigator at the California Institute of Technology, Pasadena.

The images, taken from July to August 2012, shortly after the spacecraft launched, comprise an assortment of extreme objects, including black holes near and far. The more distant black holes are some of the most luminous objects in the universe, radiating X-rays as they ferociously consume surrounding gas. One type of black hole in the new batch of data is a blazar, which is an active, supermassive black hole pointing a jet toward Earth. Pairs of black holes called X-ray binaries, in which one partner feeds off the other, are also in the mix, along with the remnants of stellar blasts called supernovas.

The data set only contains complete observations. Data will be released at a later date for those targets still being observed.

"Astronomers can use these data to better understand the capabilities of NuSTAR and design future observing proposals. The first opportunity will be this fall, for joint observations with XMM-Newton," said Karl Forster of Caltech, who is leading the effort to package the data for the public.

The European Space Agency's XMM-Newton X-ray telescope, like NASA's Chandra X-ray Observatory, complements NuSTAR. While XMM-Newton and Chandra see lower-energy X-ray light, NuSTAR is the first telescope capable of focusing high-energy X-ray light, allowing for more detailed images than were possible before.

Astronomers can compare data sets from different missions using HEASARC, which gives them a broader understanding of an object of interest. NuSTAR's high-energy observations help scientists bridge a gap that existed previously in X-ray astronomy, and will lead to new revelations about the bizarre and energetic side of our universe.

Other NASA missions with data available via HEASARC include Chandra, Fermi, Swift, Cosmic Background Explorer (COBE), Wilkinson Microwave Anisotropy Probe (WMAP) and many more.

The HEASARC is a service of the Astrophysics Science Division at NASA's Goddard Space Flight Center in Greenbelt, Md., and the High Energy Astrophysics Division of the Smithsonian Astrophysics Observatory in Cambridge, Mass. HEASARC holdings include data obtained by NASA's high-energy astronomy missions observing in the extreme-ultraviolet, X-ray, and gamma-ray bands, as well as data from missions, balloons and ground-based facilities that have studied the relic cosmic microwave background. HEASARC is online at http://heasarc.gsfc.nasa.gov .

NuSTAR is a Small Explorer mission led by Caltech and managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., for NASA's Science Mission Directorate in Washington. The spacecraft was built by Orbital Sciences Corporation, Dulles, Va. Its instrument was built by a consortium including Caltech; JPL; the University of California, Berkeley; Columbia University, New York; NASA's Goddard Space Flight Center, Greenbelt, Md.; the Danish Technical University in Denmark; Lawrence Livermore National Laboratory, Livermore, Calif.; ATK Aerospace Systems, Goleta, Calif., and with support from the Italian Space Agency (ASI) Science Data Center.

NuSTAR's mission operations center is at UC Berkeley, with ASI providing its equatorial ground station located at Malindi, Kenya. The mission's outreach program is based at Sonoma State University, Rohnert Park, Calif. NASA's Explorer Program is managed by Goddard. JPL is managed by Caltech for NASA.

For more information, visit http://www.nasa.gov/nustar and http://www.nustar.caltech.edu/ .

Contact:
Alan Buis 818-354-0474
Jet Propulsion Laboratory, Pasadena, Calif.
Alan.buis@jpl.nasa.gov

2013-264

- end -



Remove yourself from this mailing.

Remove yourself from all mailings from NASA Jet Propulsion Laboratory.

ScienceDaily: Stars News

ScienceDaily: Stars News


Modified law of gravity predicts dwarf galaxy feature prior to observations

Posted: 28 Aug 2013 07:34 AM PDT

MOND, a modified law of gravity, correctly predicted in advance of observations the velocity dispersion -- the average speed of stars within a galaxy relative to each other -- in 10 dwarf satellite galaxies of the Milky Way's giant neighbor Andromeda. MOND also detected subtle differences in gravity fields that dark matter theory says should be uniform.

Oldest solar twin identified: New clues to help solve lithium mystery

Posted: 28 Aug 2013 07:33 AM PDT

Astronomers have used ESO's Very Large Telescope to study the oldest solar twin known to date. Located 250 light-years away, the star HIP 102152 is more like the Sun than any other solar twin — except that it is nearly four billion years older. This older twin may be host to rocky planets and gives us an unprecedented chance to see how the Sun will look when it ages.

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


Space laser to prove increased broadband possible

Posted: 28 Aug 2013 06:11 PM PDT

Scientists are attemping to show two-way laser communication beyond Earth is possible, expanding the possibility of transmitting huge amounts of data. This new ability could one day allow for 3-D high definition video transmissions in deep space to become routine.

Milky Way gas cloud causes multiple images of distant quasar

Posted: 28 Aug 2013 02:31 PM PDT

For the first time, astronomers have seen the image of a distant quasar split into multiple images by the effects of a cloud of ionized gas in our own Milky Way Galaxy. Such events were predicted as early as 1970, but the first evidence for one now has come from the National Science Foundation's Very Long Baseline Array (VLBA) radio telescope system.

Modified law of gravity predicts dwarf galaxy feature prior to observations

Posted: 28 Aug 2013 07:34 AM PDT

MOND, a modified law of gravity, correctly predicted in advance of observations the velocity dispersion -- the average speed of stars within a galaxy relative to each other -- in 10 dwarf satellite galaxies of the Milky Way's giant neighbor Andromeda. MOND also detected subtle differences in gravity fields that dark matter theory says should be uniform.

Oldest solar twin identified: New clues to help solve lithium mystery

Posted: 28 Aug 2013 07:33 AM PDT

Astronomers have used ESO's Very Large Telescope to study the oldest solar twin known to date. Located 250 light-years away, the star HIP 102152 is more like the Sun than any other solar twin — except that it is nearly four billion years older. This older twin may be host to rocky planets and gives us an unprecedented chance to see how the Sun will look when it ages.

ScienceDaily: Extrasolar Planets News

ScienceDaily: Extrasolar Planets News


Oldest solar twin identified: New clues to help solve lithium mystery

Posted: 28 Aug 2013 07:33 AM PDT

Astronomers have used ESO's Very Large Telescope to study the oldest solar twin known to date. Located 250 light-years away, the star HIP 102152 is more like the Sun than any other solar twin — except that it is nearly four billion years older. This older twin may be host to rocky planets and gives us an unprecedented chance to see how the Sun will look when it ages.

ScienceDaily: Galaxies News

ScienceDaily: Galaxies News


Milky Way gas cloud causes multiple images of distant quasar

Posted: 28 Aug 2013 02:31 PM PDT

For the first time, astronomers have seen the image of a distant quasar split into multiple images by the effects of a cloud of ionized gas in our own Milky Way Galaxy. Such events were predicted as early as 1970, but the first evidence for one now has come from the National Science Foundation's Very Long Baseline Array (VLBA) radio telescope system.

Modified law of gravity predicts dwarf galaxy feature prior to observations

Posted: 28 Aug 2013 07:34 AM PDT

MOND, a modified law of gravity, correctly predicted in advance of observations the velocity dispersion -- the average speed of stars within a galaxy relative to each other -- in 10 dwarf satellite galaxies of the Milky Way's giant neighbor Andromeda. MOND also detected subtle differences in gravity fields that dark matter theory says should be uniform.

ScienceDaily: Dark Matter News

ScienceDaily: Dark Matter News


Modified law of gravity predicts dwarf galaxy feature prior to observations

Posted: 28 Aug 2013 07:34 AM PDT

MOND, a modified law of gravity, correctly predicted in advance of observations the velocity dispersion -- the average speed of stars within a galaxy relative to each other -- in 10 dwarf satellite galaxies of the Milky Way's giant neighbor Andromeda. MOND also detected subtle differences in gravity fields that dark matter theory says should be uniform.

Wednesday, August 28, 2013

Register for NASA/JPL Educator Workshop on Aeronautics

JPL/NASA News



Educator Workshop                             Aug. 28, 2013


This is a feature from the NASA/JPL Education Office.



Educator Workshop - Aeronautics, Things That Fly

Date: Saturday, Sept. 14, 2013, 10 a.m. - 12:30 p.m.

Target audience: Formal and informal educators for grades K-12

Location: NASA/JPL Educator Resource Center, Pomona, Calif.

Overview: Bring the fun of "Things That Fly" into your classroom! Construct aircraft models (kites, helicopters and gliders) and launch rockets! Use questioning strategies and engineer redesigns to make these activities educationally challenging links to Common Core State Standards and The Next Generation Science Standards.

To reserve your spot, please call the NASA/JPL Educator Resource Center at (909) 397-4420.

For more information and directions, visit: http://www.jpl.nasa.gov/education/index.cfm?page=115

-end-



Remove yourself from this mailing.

Remove yourself from all mailings from NASA Jet Propulsion Laboratory.

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


Scientists detect magmatic water on moon's surface

Posted: 27 Aug 2013 06:13 AM PDT

Scientists have detected magmatic water — water that originates from deep within the Moon's interior — on the surface of the Moon. These findings represent the first such remote detection of this type of lunar water.

Tuesday, August 27, 2013

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


NASA's Spitzer telescope celebrates 10 years in space

Posted: 26 Aug 2013 10:02 AM PDT

Ten years after a Delta II rocket launched NASA's Spitzer Space Telescope, lighting up the night sky over Cape Canaveral, Fla., the fourth of the agency's four Great Observatories continues to illuminate the dark side of the cosmos with its infrared eyes.

ScienceDaily: Dark Matter News

ScienceDaily: Dark Matter News


Chelyabinsk meteorite's rocky past: Research points to previous collision or near miss in space

Posted: 26 Aug 2013 06:56 PM PDT

Where did the Chelyabinsk meteorite come from? As a meteoroid, it either collided with another body in the solar system or came too close to the Sun before it fell to Earth, according to new research.

Monday, August 26, 2013

ScienceDaily: Black Holes News

ScienceDaily: Black Holes News


SOFIA spots recent starbursts in the Milky Way galaxy's center

Posted: 08 Jan 2013 03:58 PM PST

Researchers using the Stratospheric Observatory for Infrared Astronomy (SOFIA) have captured new images of a ring of gas and dust seven light-years in diameter surrounding the supermassive black hole at the center of the Milky Way, and of a neighboring cluster of extremely luminous young stars embedded in dust cocoons.

Saturday, August 24, 2013

ScienceDaily: Astronomy News

ScienceDaily: Astronomy News


NASA prepares for first Virginia coast launch to moon

Posted: 23 Aug 2013 06:13 AM PDT

In an attempt to answer prevailing questions about our moon, NASA is making final preparations to launch a probe at 11:27 p.m. EDT Friday, Sept. 6, from NASA's Wallops Flight Facility on Wallops Island, Va.

NASA partner Sierra Nevada Corporation completes second Dream Chaser captive-carry test

Posted: 23 Aug 2013 06:12 AM PDT

NASA partner Sierra Nevada Corporation (SNC) of Louisville, Colo., successfully completed a captive-carry test of the Dream Chaser spacecraft Thursday, Aug. 22, at the agency's Dryden Flight Research Center in Edwards, Calif.

A fluffy disk around a baby star

Posted: 23 Aug 2013 06:11 AM PDT

Astronomers have observed a disk around the young star RY Tau (Tauri). The team's analysis of the disk shows that a "fluffy" layer above it is responsible for the scattered light observed in the infrared image. Detailed comparisons with computer simulations of scattered light from the disk reveal that this layer appears to be a remnant of material from an earlier phase of stellar and disk development, when dust and gas were falling onto the disk.

ScienceDaily: Extrasolar Planets News

ScienceDaily: Extrasolar Planets News


A fluffy disk around a baby star

Posted: 23 Aug 2013 06:11 AM PDT

Astronomers have observed a disk around the young star RY Tau (Tauri). The team's analysis of the disk shows that a "fluffy" layer above it is responsible for the scattered light observed in the infrared image. Detailed comparisons with computer simulations of scattered light from the disk reveal that this layer appears to be a remnant of material from an earlier phase of stellar and disk development, when dust and gas were falling onto the disk.