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NASA releases new photos of Rosetta Comet

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – As the European Space Agency’s Rosetta probe approaches Comet 67P/Churyumov-Gerasimenko (67P) for an August rendezvous, the comet’s core is coming into sharper focus. On Thursday, July 24th, ESA released a new set of images and a striking 3D model of 67P’s nucleus.

The resolution of the latest images taken by the spacecraft’s OSIRIS imaging system on July 20th is 330 feet (100 meters) per pixel. At that resolution, 67P appears to consist of two parts: a smaller head connected to a larger body. The connecting region, the neck, is proving to be especially intriguing.

Comet 67P/Churyumov-Gerasimenko was imaged by the European Space Agency's Rosetta spacecraft on July 20, 2014, from a distance of approximately 3,400 miles (5,500 kilometers). These three images were taken two hours apart. (ESA/Rosetta/MPS for OSIRIS Team/MPS/UPD/LAM/IAA/SSO/INTA/UPM)

Comet 67P/Churyumov-Gerasimenko was imaged by the European Space Agency’s Rosetta spacecraft on July 20, 2014, from a distance of approximately 3,400 miles (5,500 kilometers). These three images were taken two hours apart. (ESA/Rosetta/MPS for OSIRIS Team/MPS/UPD/LAM/IAA/SSO/INTA/UPM)

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NASA’s Chandra X-ray Observatory discovers a mystery in Perseus Cluster

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – The Universe is a big place, full of unknowns. Astronomers using NASA’s Chandra X-ray Observatory have just catalogued a new one.

“I couldn’t believe my eyes,” says Esra Bulbul of the Harvard Center for Astrophysics. “What we found, at first glance, could not be explained by known physics.”

Together with a team of more than a half-dozen colleagues, Bulbul has been using Chandra to explore the Perseus Cluster, a swarm of galaxies approximately 250 million light years from Earth.

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NASA looks back at the July 2012 Solar Superstorm that just missed Earth

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – If an asteroid big enough to knock modern civilization back to the 18th century appeared out of deep space and buzzed the Earth-Moon system, the near-miss would be instant worldwide headline news.

Two years ago, Earth experienced a close shave just as perilous, but most newspapers didn’t mention it. The “impactor” was an extreme solar storm, the most powerful in as much as 150+ years.

“If it had hit, we would still be picking up the pieces,” says Daniel Baker of the University of Colorado.

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NASA’s Fermi Gamma-ray Space Telescope sees Pulsar Transformation

 

Written by Francis Reddy
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – In late June 2013, an exceptional binary containing a rapidly spinning neutron star underwent a dramatic change in behavior never before observed.

The pulsar’s radio beacon vanished, while at the same time the system brightened fivefold in gamma rays, the most powerful form of light, according to measurements by NASA’s Fermi Gamma-ray Space Telescope.

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NASA tests Free-Flying SPHERES in hopes they can perform Housekeeping jobs for Astronauts

 

Written by Maria Alberty
NASA’s Ames Research Center

NASA - National Aeronautics and Space AdministrationMoffett Field, CA – Inspired by science fiction, three bowling ball-size free-flying Synchronized Position Hold, Engage, Reorient, Experimental Satellites (SPHERES) have been flying inside the International Space Station since 2006.

These satellites provide a test bed for development and research, each having its own power, propulsion, computer, navigation equipment, and physical and electrical connections for hardware and sensors for various experiments.

Three satellites fly in formation as part of the Synchronized Position Hold, Engage, Reorient, Experimental Satellites (SPHERES) investigation. This image was taken during Expedition 14 in the Destiny laboratory module. (NASA)

Three satellites fly in formation as part of the Synchronized Position Hold, Engage, Reorient, Experimental Satellites (SPHERES) investigation. This image was taken during Expedition 14 in the Destiny laboratory module. (NASA)

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NASA takes a look back at the Jupiter comet crash

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Twenty years ago, human and robotic eyes observed the first recorded impact between cosmic bodies in the solar system, as fragments of comet Shoemaker-Levy 9 slammed into the atmosphere of Jupiter.

Between July 16th and July 22nd, 1994, space- and Earth-based assets managed by NASA’s Jet Propulsion Laboratory in Pasadena, California, joined an armada of other NASA and international telescopes, straining to get a glimpse of the historic event.

NASA's Galileo spacecraft captured these four views of Jupiter as the last of comet Shoemaker-Levy 9's large fragments struck the planet. (NASA/JPL-Caltech)

NASA’s Galileo spacecraft captured these four views of Jupiter as the last of comet Shoemaker-Levy 9′s large fragments struck the planet. (NASA/JPL-Caltech)

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NASA’s Orbiting Carbon Observatory-2 will soon provide Scientists data to look into the past

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Orbiting Carbon Observatory-2, which launched on July 2nd, will soon be providing about 100,000 high-quality measurements each day of carbon dioxide concentrations from around the globe. Atmospheric scientists are excited about that.

But to understand the processes that control the amount of the greenhouse gas in the atmosphere, they need to know more than just where carbon dioxide is now. They need to know where it has been. It takes more than great data to figure that out.

Scientists will use measurements from the Orbiting Carbon Observatory-2 to track atmospheric carbon dioxide to sources such as these wildfires in Siberia, whose smoke plumes quickly carry the greenhouse gas worldwide. The fires were imaged on May 18 by NASA's Moderate Resolution Imaging Spectrometer instrument on the Terra satellite. (NASA/LANCE/EOSDIS Rapid Response)

Scientists will use measurements from the Orbiting Carbon Observatory-2 to track atmospheric carbon dioxide to sources such as these wildfires in Siberia, whose smoke plumes quickly carry the greenhouse gas worldwide. The fires were imaged on May 18 by NASA’s Moderate Resolution Imaging Spectrometer instrument on the Terra satellite. (NASA/LANCE/EOSDIS Rapid Response)

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NASA’s Aura satellite celebrates it’s 10th Year analyzing Earth’s Climate System

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Nitrogen and oxygen make up nearly 99 percent of Earth’s atmosphere. The remaining one percent is comprised of gases that — although present in small concentrations — can have a big impact on life on Earth.

Trace gases called greenhouse gases warm the surface, making it habitable for humans, plants and animals. But these greenhouse gases, as well as clouds and tiny particles called aerosols in the atmosphere, also play vital roles in Earth’s complex climate system.

NASA's 10-year-old Aura satellite, which studies Earth's atmosphere, continues to help scientists understand Earth's changing climate. (NASA)

NASA’s 10-year-old Aura satellite, which studies Earth’s atmosphere, continues to help scientists understand Earth’s changing climate. (NASA)

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NASA says Rosetta Spacecraft discovers target Comet’s center made of two parts

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – As the European Space Agency’s spacecraft Rosetta is slowly approaching its destination, comet 67P/Churyumov-Gerasimenko, the comet is again proving to be full of surprises.

New images obtained by OSIRIS, the onboard scientific imaging system, confirm the body’s peculiar shape hinted at in earlier pictures. Comet 67P is obviously different from other comets visited so far.

The images show that comet 67P/Churyumov-Gerasimenko has a two-part shape. (ESA/Rosetta/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

The images show that comet 67P/Churyumov-Gerasimenko has a two-part shape. (ESA/Rosetta/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

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NASA’s Mars Curiosity Rover catches Flash images from ChemCam laser firing on Martian Rock

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Flashes appear on a baseball-size Martian rock in a series of images taken Saturday, July 12th by the Mars Hand Lens Imager (MAHLI) camera on the arm of NASA’s Curiosity Mars Rover. The flashes occurred while the rover’s Chemistry and Camera (ChemCam) instrument fired multiple laser shots to investigate the rock’s composition.

ChemCam’s laser has zapped more than 600 rock and soil targets on Mars since Curiosity landed in the planet’s Gale Crater in August 2012.

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