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Latest Terrestrial planets Stories

Earth-Like Planets Very Common In Red Dwarf Systems
2012-03-28 10:44:51

The astronomers from that European Space Observatory have helped reveal that rocky planets not much bigger than Earth are very common in the habitable zone around faint red stars. A team of astronomers estimates there are tens of billions of these rocky planets in the Milky Way galaxy alone, and about one hundred in the Sun's neighborhood. The team used observations with the HARPS spectrograph on the telescope at ESO's La Silla Observatory in Chile. They had been searching for...

Super-Earth Transfer Of Life Unlikely
2012-03-22 04:04:10

While scientists believe conditions suitable for life might exist on the so-called "super-Earth" in the Gliese 581 system, it's unlikely to be transferred to other planets within that solar system. "One of the big scientific questions is how did life get started and how did it spread through the universe," said Jay Melosh, distinguished professor of earth and atmospheric sciences. "That question used to be limited to just the Earth, but we now know in our solar system there is a lot of...

Messenger Completes Mercury Mission
2012-03-21 12:30:58

In Roman mythology Mercury was the “Messenger of the Gods,” — as well as a god of trade, thieves and travel. It is thus fitting — apart from the trade and thieves aspect — that the MESSENGER program has been so carefully studying the inner most planet in our solar system. MErcury, Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) this week successfully completed a year-long mission to perform the first complete reconnaissance of the...

2012-03-15 12:12:53

In honor of 1,000 days in orbit, the NASA Lunar Reconnaissance Orbiter (LRO) team at NASA Goddard Space Flight Center in Greenbelt Md. has released two new videos. One video takes viewers through the moon's evolutionary history, and reveals how it came to appear the way it does today. Another video gives viewers a guided tour of prominent locations on the moon's surface, compiled by the spacecraft's observations of the moon. "Evolution of the Moon" explains why the moon did not always...

Earth’s Magnetic Field Provides Vital Protection
2012-03-09 03:00:23

A chance alignment of planets during a passing gust of the solar wind has allowed scientists to compare the protective effects of Earth´s magnetic field with that of Mars´ naked atmosphere. The result is clear: Earth´s magnetic field is vital for keeping our atmosphere in place. The alignment took place on 6 January 2008. Using ESA´s Cluster and Mars Express missions to provide data from Earth and Mars, respectively, scientists compared the loss of oxygen from the two...

Image 1 - NASA Researchers Study Explosions On Venus
2012-03-06 09:16:43

[ Watch the Video ] Venus, often referred to as Earth´s sister planet due to its similar size, gravity, and composition, has been discovered by astronomers to also have a type of space weather event that is commonly found on Earth: a hot flow anomaly or HFA. HFAs are generally associated with the magnetosphere of a planet, such as Earth. But where Venus has no magnetosphere, the phenomenon surprised astronomers. The astronomers, reporting their findings from a recent study in...

The Blue Planet's New Water Budget
2012-03-06 04:28:52

Investigating the history of water on Earth is critical to understanding the planet's climate. One central question is whether Earth has always had the same amount of water on and surrounding it, the same so-called "water budget". Has Earth gained or lost water from comets and meteorites? Has water been lost into space? New research into the Earth's primordial oceans conducted by researchers at the Natural History Museum of Denmark at the University of Copenhagen and Stanford University...

Venus May Be Slowing Down
2012-02-11 04:02:58

[ Watch a Venus Animation ] ESA´s Venus Express spacecraft has discovered that our cloud-covered neighbor spins a little slower than previously measured. Peering through the dense atmosphere in the infrared, the orbiter found surface features were not quite where they should be. Using the VIRTIS instrument at infrared wavelengths to penetrate the thick cloud cover, scientists studied surface features and discovered that some were displaced by up to 20 km from where they should be...

Astronomers Spot Fourth Potential Habitable Planet
2012-02-03 09:41:48

An international team of astronomers have discovered a potentially habitable planet 22 light years away orbiting a nearby star, reports The Telegraph. Scientists, led by Carnegie´s Guillem Anglada-Escudé and Paul Butler, discovered the triple star system with a planet orbiting one of the stars, clearly within the habitable zone, where its neither too hot nor too cold, making it suitable for liquid water to be present on the surface. The host star has a different makeup...

2012-02-02 14:04:22

An international team of scientists led by Carnegie's Guillem Anglada-Escudé and Paul Butler has discovered a potentially habitable super-Earth orbiting a nearby star. The star is a member of a triple star system and has a different makeup than our Sun, being relatively lacking in metallic elements. This discovery demonstrates that habitable planets could form in a greater variety of environments than previously believed. Their work will be published by the Astrophysical Journal...


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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Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
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