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Latest Planetary systems Stories

4c5c7650920a36dc39853631f58d78741
2009-05-13 13:30:00

Scientists have long wondered how tiny silicate crystals, which need sizzling high temperatures to form, have found their way into frozen comets, born in the deep freeze of the solar system's outer edges.

964b439075952db6f99cf1e5352c9cad1
2009-05-08 08:35:00

Researchers at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass have created an "astro-comb" to help astronomers detect lighter planets, more like Earth, around distant stars.

52cd55777098e90125ad322ef825ac741
2009-04-21 10:08:41

A team of astronomers from University College London (UCL), including undergraduate students, have discovered that an exotic world passes directly in front of the Sun-like star it orbits, revealing for the first time that it is about the same size as Jupiter.

2009-04-20 13:34:32

Astronomers using the U.S.

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2009-04-20 09:08:16

Astronomers have announced plans to build an ultra-stable, high-precision spectrograph for the Science and Technology Facilities Council's 4.2-m William Herschel Telescope (WHT - part of the Isaac Newton Group or ING on La Palma) in an effort to discover habitable Earth-like planets around other stars.

6739629b886a6196af27c7fe98602a3e1
2009-02-15 11:55:00

There might be one hundred billion Earth-like planets in our galaxy, US scientists announced at a recent press conference.

2009-02-06 11:25:00

South Korean researchers say they've discovered a planetary system that has two suns. Lee Jae-woo and Kim Seung-ri of the Korea Astronomy and Space Science Institute and Kim Chun-hwui of Chungbuk National University said the planetary system, which they've named HW Vir has had the two suns since its

edadef672d9070f98c9248f67e08fc7a1
2009-01-20 09:35:00

Astronomers at the Harvard-Smithsonian Center for Astrophysics have discovered a planet somewhat larger and more massive than Neptune orbiting a star 120 light-years from Earth.

0e7c89b74e61f5abb235e8963d0fe182
2009-01-05 13:20:00

Astronomers have turned to an unexpected place to study the evolution of planets -- dead stars.

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2008-12-16 16:35:00

Some stars have it tough when it comes to raising planets. A new image from NASA's Spitzer Space Telescope shows one unlucky lot of stars, born into a dangerous neighborhood.


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...

Extrasolar Planet
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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Word of the Day
bretelles
  • In dressmaking, straps running from the belt in front over the shoulders to the belt in the back, with more or less elaboration of trimming and outline. They usually broaden at the shoulder and narrow toward the waist.
The word 'bretelles' comes from a French word meaning 'braces'.