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Topic: Astronomers

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’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 reports three Supermoons to occur in consecutive months

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – In June of last year, a full Moon made headlines. The news media called it a “supermoon” because it was 14% bigger and 30% brighter than other full Moons of 2013.  Around the world, people went outside to marvel at its luminosity.

If you thought one supermoon was bright, how about three….? The full Moons of summer 2014 — July 12th, August 10th, and September 9th — will all be supermoons.

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NASA reports discovery of Icy Planet in Binary Star System

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A newly discovered planet in a binary, or twin, star system located 3,000 light-years from Earth is expanding astronomers’ notions of where Earth-like — and even potentially habitable — planets can form, and how to find them.

At twice the mass of Earth, the planet orbits one of the stars in the binary system at almost exactly the same distance at which Earth orbits the sun. However, because the planet’s host star is much dimmer than the sun, the planet is much colder than Earth — a little colder, in fact, than Jupiter’s icy moon Europa.

This artist's rendering shows a newly discovered planet (far right) orbiting one star (right) of a binary star system. The discovery, made by a collaboration of international research teams and led by researchers at The Ohio State University, expands astronomers' notions of where to look for planets in our galaxy. The research was funded in part by NASA. (Cheongho Han, Chungbuk National University, Republic of Korea)

This artist’s rendering shows a newly discovered planet (far right) orbiting one star (right) of a binary star system. The discovery, made by a collaboration of international research teams and led by researchers at The Ohio State University, expands astronomers’ notions of where to look for planets in our galaxy. The research was funded in part by NASA. (Cheongho Han, Chungbuk National University, Republic of Korea)

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NASA says Herschel Space Observatory has discovered Giant Weird Ring Structure along with growing Stars

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The Herschel Space Observatory has uncovered a weird ring of dusty material while obtaining one of the sharpest scans to date of a huge cloud of gas and dust, called NGC 7538.

The observations have revealed numerous clumps of material, a baker’s dozen of which may evolve into the most powerful kinds of stars in the universe. Herschel is a European Space Agency mission with important NASA contributions.

The Herschel Space Observatory has uncovered a weird ring of dusty material while obtaining one of the sharpest scans to date of a huge cloud of gas and dust, called NGC 7538. (ESA/NASA/JPL-Caltech/Whitman College)

The Herschel Space Observatory has uncovered a weird ring of dusty material while obtaining one of the sharpest scans to date of a huge cloud of gas and dust, called NGC 7538. (ESA/NASA/JPL-Caltech/Whitman College)

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NASA’s newly found Asteroid will Safely Pass Earth

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A newfound asteroid will safely pass Earth on June 8th from a distance of about 777,000 miles (1.25 million kilometers), more than three times farther away than our moon.

Designated 2014 HQ124, the asteroid was discovered April 23rd, 2014, by NASA’s NEOWISE mission, a space telescope adapted for scouting the skies for asteroids and comets. The telescope sees infrared light, which allows it to pick up the infrared glow of asteroids and obtain better estimates of their true sizes. The NEOWISE data estimate asteroid 2014 HQ124 to be between 800 and 1,300 feet (250 and 400 meters).

This diagram shows the orbit of asteroid 2014 HQ124, and its location relative to Earth on June 8th. (NASA/JPL-Caltech)

This diagram shows the orbit of asteroid 2014 HQ124, and its location relative to Earth on June 8th. (NASA/JPL-Caltech)

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NASA’s Kepler Space Telescope discovers Rocky Planet that baffles Astronomers

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers have discovered a rocky planet that weighs 17 times as much as Earth and is more than twice as large in size. This discovery has planet formation theorists challenged to explain how such a world could have formed.

“We were very surprised when we realized what we had found,” said astronomer Xavier Dumusque of the Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, who led the analysis using data originally collected by NASA’s Kepler space telescope.

An artist's conception shows the Kepler-10 system, home to two rocky planets. In the foreground is Kepler-10c, a planet that weighs 17 times as much as Earth and is more than twice as large in size. Planet formation theorists are challenged to explain how such a massive world could have formed. (Harvard-Smithsonian Center for Astrophysics/David Aguilar)

An artist’s conception shows the Kepler-10 system, home to two rocky planets. In the foreground is Kepler-10c, a planet that weighs 17 times as much as Earth and is more than twice as large in size. Planet formation theorists are challenged to explain how such a massive world could have formed. (Harvard-Smithsonian Center for Astrophysics/David Aguilar)

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NASA’s Wide-field Infrared Survey Explorer (WISE) Black Hole Survey has astronomers reexamining “Doughnut” Theory

 

Written by J.D. Harrington
NASA Headquarters

NASA - National Aeronautics and Space AdministrationWashington, D.C. – A survey of more than 170,000 supermassive black holes, using NASA’s Wide-field Infrared Survey Explorer (WISE), has astronomers reexamining a decades-old theory about the varying appearances of these interstellar objects.

The unified theory of active, supermassive black holes, first developed in the late 1970s, was created to explain why black holes, though similar in nature, can look completely different. Some appear to be shrouded in dust, while others are exposed and easy to see.

Active, supermassive black holes at the hearts of galaxies tend to fall into two categories: those that are hidden by dust, and those that are exposed. (NASA/JPL-Caltech)

Active, supermassive black holes at the hearts of galaxies tend to fall into two categories: those that are hidden by dust, and those that are exposed. (NASA/JPL-Caltech)

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NASA’s Spitzer Space Telescope spies Cosmic Clumps casting Pitch Black Shadows

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers have found cosmic clumps so dark, dense and dusty that they throw the deepest shadows ever recorded. Infrared observations from NASA’s Spitzer Space Telescope of these blackest-of-black regions paradoxically light the way to understanding how the brightest stars form.

The clumps represent the darkest portions of a huge, cosmic cloud of gas and dust located about 16,000 light-years away. A new study takes advantage of the shadows cast by these clumps to measure the cloud’s structure and mass.

Astronomers have found cosmic clumps so dark, dense and dusty that they throw the deepest shadows ever recorded. (NASA/JPL-Caltech/University of Zurich)

Astronomers have found cosmic clumps so dark, dense and dusty that they throw the deepest shadows ever recorded. (NASA/JPL-Caltech/University of Zurich)

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NASA Hubble Space Telescope observations reveals Red Spot on Jupiter at smallest size ever measured

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Jupiter’s trademark Great Red Spot — a swirling storm feature larger than Earth — has shrunk to its smallest size ever measured.

According to Amy Simon of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, recent NASA Hubble Space Telescope observations confirm the Great Red Spot now is approximately 10,250 miles (16,500 kilometers) across. Astronomers have followed this downsizing since the 1930s.

Jupiter's trademark Great Red Spot -- a swirling storm feature larger than Earth -- has shrunken to its smallest size ever measured. Astronomers have followed this downsizing since the 1930s. This series of images taken by NASA's Hubble Space Telescope documents the storm over time, beginning in 1995 with a view from the telescope's Wide Field and Planetary Camera 2 (WFPC2) when the long axis of the Great Red Spot was estimated to be 13,020 miles (20,950 kilometers) across.

Jupiter’s trademark Great Red Spot — a swirling storm feature larger than Earth — has shrunken to its smallest size ever measured. Astronomers have followed this downsizing since the 1930s. This series of images taken by NASA’s Hubble Space Telescope documents the storm over time, beginning in 1995 with a view from the telescope’s Wide Field and Planetary Camera 2 (WFPC2) when the long axis of the Great Red Spot was estimated to be 13,020 miles (20,950 kilometers) across.

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