Latest Terrestrial planets Stories
Four bright planets are aligning in the morning sky this week.
New analysis of images taken by ESA's Venus Express orbiter has revealed surprising details about the remarkable, shape-shifting collar of clouds that swirls around the planet's South Pole.
Bombardments of 'micro-meteorites' on Earth and Mars 4 billion years ago may have caused the planets' climates to cool dramatically.
NASA released the first batch of hundreds of photos taken by MESSENGER during its orbit of Mercury on Wednesday.
Scientists are excited about solving some of the mysteries surrounding our smallest and hottest planet; the findings are expected to broaden our understanding of rocky planets, more and more of which are being discovered in other solar systems.
A small NASA spacecraft called Messenger will enter into the orbit of the planet Mercury on St Patrick â€™s Day, circling as close as 125 miles from the rocky planet's surface and revealing parts of Mercury never before seen by human eyes.
HOUSTON, Feb. 25, 2011 /PRNewswire-USNewswire/ -- Studies of ice processes on Mars and early science results from a Japanese mission to an asteroid will highlight the 42nd annual Lunar and Planetary Science Conference March 7-11 in Houston.
NASA's MESSENGER probe is about set a milestone for spacecraft as it becomes the first probe to orbit Mercury.
New research gives the first accurate estimate of how much faster the Earth's core is rotating compared to the rest of the planet.
From space, NASA satellites record the change of seasons.
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,...
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...
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...
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...
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)....
- A volcanic mudflow.