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Latest Planetary systems Stories

2013-02-20 12:21:22

WASHINGTON, Feb. 20, 2013 /PRNewswire-USNewswire/ -- NASA's Kepler mission scientists have discovered a new planetary system that is home to the smallest planet yet found around a star similar to our sun. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The planets are located in a system called Kepler-37, about 210 light-years from Earth in the constellation Lyra. The smallest planet, Kepler-37b, is slightly larger than our moon, measuring about one-third the size of Earth. It...

protoplanetary disk around J 1604
2013-02-08 11:38:19

[ Listen to the Podcast: “How Planets Form” With Guest Dr. Eric Mamajek (Part 1): Your Universe Today Podcasts ] Lee Rannals for redOrbit.com - Your Universe Online The Subaru Telescope has helped astronomers capture the first vivid infrared image of a distant planet forming from a young star. Astronomers wrote in Astrophysical Journal Letters about an image of a curved arm of dust extending over a hole on a disk, which is a feature that could provide evidence that...

Super-Earths May Actually Be Mini-Neptunes
2013-02-04 19:14:15

Lee Rannals for redOrbit.com — Your Universe Online Finding planets outside of our own Solar System has become a bit of a hot topic in the scientific community, and the enthusiasm behind the discovery of "Earth-like" planets has been on the rise, but a new study suggests we may want to tone down our excitement a bit. A new study led by Dr. Helmut Lammer of the Space Research Institute (IWF) at the Austrian Academy of Sciences says that maybe these "Earth-like" planets may not be...

TW Hydrae Protoplanetary Disk Weighed With Unprecedented Accuracy
2013-01-30 13:26:09

Lee Rannals for redOrbit.com - Your Universe Online Astronomers recently reported in the journal Nature that they have determined the mass of the planetary nursery surrounding the star TW Hydrae with unprecedented accuracy. TW Hydrae lies roughly 176 light-years away from Earth and is one of the most frequently observed protoplanetary disks in space. The young star is surrounded with a disk of dense gas and dust, in which larger objects begin to turn into planets. Our Solar System...

NASA Finds New Asteroid Belt Discovered Orbiting Vega
2013-01-09 15:11:09

redOrbit Staff & Wire Reports - Your Universe Online A team of U.S. astronomers has discovered what looks to be a large asteroid belt orbiting around Vega, the second-brightest star in the northern sky, NASA officials announced on Tuesday. Using data obtained from the Spitzer Space Telescope and the European Space Agency's (ESA) Herschel Space Observatory, the researchers discovered infrared light emitted by warm and cold dust in bands around both Vega and Fomalhaut, a second...

Fomalhaut b’s Odd Orbit May Be Caused By Star’s Vast Debris Disk
2013-01-09 11:45:36

redOrbit Staff & Wire Reports — Your Universe Online According to newly released images from the Hubble Space Telescope, a vast debris belt circling around a nearby star is wider than scientists believe, and the unusual orbit of a planet traveling around that star could be to blame. In a statement released Tuesday, NASA officials stated that the images reveal that the debris disk traveling around the star Fomalhaut actually spans from 14 to 20 billion miles from the star...

2013-01-08 20:20:10

WASHINGTON, Jan. 8, 2013 /PRNewswire-USNewswire/ -- Astronomers have discovered what appears to be a large asteroid belt around the star Vega, the second brightest star in northern night skies. The scientists used data from NASA's Spitzer Space Telescope and the European Space Agency's (ESA) Herschel Space Observatory, in which NASA plays an important role. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The discovery of an asteroid belt-like band of debris around Vega makes...

2013-01-08 20:20:07

WASHINGTON, Jan. 8, 2013 /PRNewswire-USNewswire/ -- Newly released NASA Hubble Space Telescope images of a vast debris disk encircling the nearby star Fomalhaut and a mysterious planet circling it may provide forensic evidence of a titanic planetary disruption in the system. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO ) Astronomers are surprised to find the debris belt is wider than previously known, spanning a section of space from 14 to nearly 20 billion miles from the...

Planets Galore Found By Kepler
2013-01-08 11:28:45

Brett Smith for redOrbit.com - Your Universe Online After completing a new analysis of data from the Kepler space observatory, NASA scientists announced that they have identified 461 new planet candidates – including four that closely mirror the size and distance from their sun as Earth. Kepler´s mission to find Earth-like planets was recently extended to 2016 after difficulties arose in processing the large volume of data produced by the orbiting observatory. Since the most...

Binary Star Orbit Shifts Could Force Planetary Ejections
2013-01-07 03:28:35

redOrbit Staff & Wire Reports - Your Universe Online The orbits of distant binary stars can become altered over time, potentially causing violent disruptions in their planetary systems and possibly causing worlds to become scattered or ejected, an international team of astrophysicists has discovered in a new study. According to the researchers, all planetary systems in which one star is orbited by a second, companion star, can be altered by the gravity of the companion star, but...


Latest Planetary systems Reference Libraries

8_2c71772f2c3a31994d5208d4518632494
2004-10-19 04:45:44

Cosmogony -- Cosmogony is the study of the origins of celestial objects. It is most commonly used to refer to the study of the origin of the solar system. Currently, the most widely accepted theory is that the solar system was formed roughly 5 billion years ago with the collapse of a nebula of gas and dust, likely caused by shock waves generated by a nearby supernova. The solar system would have formed as a member of a star cluster, now long-since dispersed throughout the Milky Way over...

6_9e1c3aab8f24d964cf24588309b138472
2004-10-19 04:45:42

Solar Nebula -- In astronomy, the solar nebula is the gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation. In 1755 the German philosopher Immanuel Kant suggested that a nebula in slow rotation, gradually pulled together by its own gravitational force and flattened into a spinning disk, gave birth to the Sun and planets. A similar model, but with the planets being formed before the Sun, was proposed...

6_f3ae28666ea2fe9e06e16221eea19d522
2004-10-19 04:45:41

Extrasolar Planet -- An extrasolar planet is a planet orbiting around a star other than the Sun. Extrasolar planets were first discovered in the 1990s as a result of improved telescope technology, CCD and computer-based image processing which allowed far more accurate measurements of stellar motions. The first extrasolar planets were reported by the astronomer Aleksander Wolszczan in 1993, orbiting the pulsar PSR 1257+12. Subsequent investigation has determined that they are only planets...

4_2263b8f4e602bddd69c225b3bc2c46aa2
2004-10-19 04:45:41

Asteroid Belt -- The Asteroid belt is a region of the solar system falling roughly between the planets Mars and Jupiter where the greatest concentration of asteroid orbits can be found. It is believed that, during the first million years of the solar system history, planets formed by accretion of planetesimals. Ripetute collisions led to the familiar rocky planets and to the gas giant's cores. However, in this zone of the system the strong gravity of Jupiter inhibited the final stages...

3_26342a6670b6131c97d5fc3f8796ebd92
2004-10-19 04:45:40

Epsilon Eridani -- Epsilon Eridani is a main-sequence star in the constellation of Eridanus (the river). It is often used in science fiction because it is extremely sunlike, and in the fictional Star Trek universe it is the home sun of the planet Vulcan which is home to Mr. Spock. It is the third closest star visible without a telescope. It has 85% of the Sun's mass, almost that much of its diameter, and 28% of its luminosity. It is 10.5 light years from Earth. Its spectrum is...

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