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Latest Terrestrial planets Stories

Moon Formation From Giant Hit-and-run Impact
2012-07-30 04:42:40

redOrbit Staff & Wire Reports - Your Universe Online While scientists tend to accept the theory that the Moon was formed following a collision between a young Earth and a second planet, new research published online earlier this month suggests that the impactor might have been larger and traveling faster than previously believed. Current theory suggests that Earth's satellite was formed when the protoplanet was hit by a second world, believed to have been about the size of Mars,...

Exoplanet Candidate Smaller Than Earth Discovered
2012-07-18 14:46:30

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have detected a new exoplanet 33 light-years away that is two-thirds the size of Earth, making it the nearest known world to our solar system that is smaller than our home planet. UCF-1.01 was discovered by astronomers from the University of Central Florida using NASA's Spitzer Space Telescope. The exoplanet is the first ever identified with the telescope, pointing to a possible new role for Spitzer in helping to...

2012-06-26 10:26:11

Mineral evolution posits that Earth's near-surface mineral diversity gradually increased through an array of chemical and biological processes. A dozen different species in interstellar dust particles that formed the solar system have evolved to more than 4500 species today. Previous work from Carnegie's Bob Hazen demonstrated that up to two thirds of the known types of minerals on Earth can be directly or indirectly linked to biological activity. Now Hazen has turned his focus specifically...

ESA Missions Observe Transit Of Venus
2012-06-06 06:59:03

[ Watch the Video ] Astronomers around the world looked to the sky last night and this morning to observe Venus as it passed across the face of the Sun for the last time this century. ESA´s Sun-watching space missions also tuned in for the solar spectacular. ESA´s microsatellite Proba-2, situated in low-Earth orbit, tracked Venus as it moved across the solar disc over a period of nearly seven hours. Venus appears to wobble thanks to the slight up-down motion of Proba-2 and the...

Image 1 - Final Countdown: Transit Of Venus Closing In
2012-06-05 14:29:11

Lee Rannals for redOrbit.com The Transit of Venus is upon us, so grab your sun viewing spectacles, head outside, and go get yourself a look at a cosmic event. For those kiddos that will be born today, or in the next few years, statistically speaking you will be able to rub this moment in most of their faces when they get older, because they will not get to see Venus pass by the Sun at any point in their lifetime. The next time the Transit of Venus will occur will be the year 2117....

Transit Of Venus Only A Day Away...Are You Prepared?
2012-06-04 10:00:17

[ Watch the Video ] Lee Rannals for redOrbit.com If you aren't looking up towards the sun tomorrow with the proper eye equipment, then a special moment is going to pass you by. The Transit of Venus is taking place on Tuesday, and it will not be seen again until 2117. The transits of Venus occur in pairs once every 100 years, so this upcoming transit is the last until the next generation gets their opportunity. Astronaut Don Pettit is up in the International Space Station armed...

Focused Alien Hunt Coming Up Empty Thus Far
2012-06-04 03:15:31

A technique that allows radio astronomers to combine observations made simultaneously by multiple arrays has yet to detect any signs of extraterrestrial broadcast signals, Australian researchers have confirmed. In a study posted online May 29 and scheduled for publication in the Astronomical Journal, experts at the Curtin University International Centre for Radio Astronomy Research used very long baseline interferometry (VLBI) to examine Gliese 581, a star which is orbited by planets...

Reports Confirm Existence Of Habitable Exo-Planet
2012-04-28 03:28:20

After re-evaluating information collected back in February, scientists reportedly confirmed on Friday that they had indeed discovered a planet outside of our solar system that is capable of supporting life. The planet, which was been dubbed Gliese 667Cc, orbits around a red dwarf star located 22 light years away from Earth, according to published reports from the Telegraph. Scientists told the newspaper that Gliese 667Cc lies in what they refer to as the "habitable zone," which means that...

2012-04-25 10:20:25

WASHINGTON, April 25, 2012 /PRNewswire-USNewswire/ -- Research by NASA and international scientists concludes giant asteroids, similar or larger than the one believed to have killed the dinosaurs, hit Earth billions of years ago with more frequency than previously thought. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) To cause the dinosaur extinction, the killer asteroid that impacted Earth 65 million years ago would have been almost 6 miles (10 kilometers) in diameter. By...

Image 1 - New Research Reveals Details About Earth's Asteroid Impacts
2012-04-25 13:53:40

Lee Rannals for RedOrbit.com Researchers are reporting in the journal Nature that tiny "spherules" embedded in layers of rock have given them details about Earth's asteroid impacts. According to the team, the spherules were created when asteroids crashed into the Earth, vaporizing rock that expanded into space as a giant vapor plume. Small droplets of molten and vaporized rock in the plume then condensed and solidified, falling back to Earth as a thin layer.  These particles...


Latest Terrestrial planets Reference Libraries

6_ca87660286bca43fbd7e3f90543baaa72
2004-10-19 04:45:42

Terrestrial Planet -- A terrestrial planet is a planet that is mostly composed of silicate rocks and may or may not have a relatively thin atmosphere. The term is derived from the Greek word for Earth, so an alternate definition would be those planets that are more Earth-like than not. Terrestrial planets are very different from gas giants, which may or may not have solid surfaces and are composed mostly of hydrogen and helium in various physical states. Only one terrestrial planet,...

4_eccd202c9b173d8cc2bddcaa6629203b2
2004-10-19 04:45:40

The Planet Venus is the second planet from the sun. It is often called the evening star or morning star and is brighter than any object in the sky except the sun and the moon. Because its orbit lies between the sun and the orbit of the earth, Venus passes through phases like those of the moon, varying from a large bright crescent when the planet is near inferior conjunction (nearest the earth) to a smaller silvery disk when it is at superior conjunction (farthest from the earth). Since...

4_9748baf12fb7dd89aa4315d7732196cd2
2004-10-19 04:45:40

The Planet Mercury -- in astronomy, nearest planet to the sun, at a mean distance of 36 million mi (58 million km); its period of revolution is 88 days. Mercury passes through phases similar to those of the moon as it completes each revolution about the sun, although the visible disk varies in size with respect to its distance from the earth. Because its greatest elongation is 28, it is seen only for a short time after sunset or before sunrise. Since observation of Mercury is...

4_81f631e16d8d1d35870c180f342c83a12
2004-10-19 04:45:40

The Planet Mars -- in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Physical Characteristics Mars has a striking red appearance, and in its most favorable position for viewing, when it is opposite the sun, it is twice as bright as Sirius, the brightest star. Mars has a diameter of 4,200 mi (6,800 km), just over half the diameter of the earth, and its mass is only 11% of the earth's mass. The planet has a very thin atmosphere consisting...

4_33609f8ebef994f54be143abe0bef9f42
2004-10-19 04:45:40

Earth -- in geology and astronomy, fifth largest planet of the solar system and the only planet definitely known to support life. Gravitational forces have molded the earth, like all celestial bodies, into a spherical shape. However, the earth is not an exact sphere, being slightly flattened at the poles and bulging at the equator. The equatorial diameter is c.7,926 mi (12,760 km) and the polar diameter 7,900 mi (12,720 km); the circumference at the equator is c.24,830 mi (40,000 km)....

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