Last Saturday on March 9, the Cassini (Cassini is a NASAs’ robotic spacecraft sent to the Saturn planet) was most near to the Saturn moon Rhea , for the first time. During this close passing the Cassini did the image of the Rhea. The purpose of flyby was to observe the internal structure of the Rhea. This probe was done by measuring the gravitation pull of Rhea. The results of probe will help the scientists to find out if the Rhea, which has 950 mile wide, is homogeneous, or it is separated into core layers of mental. The distance of Cassini from the Saturn moon Rhea was 997 kilometers, and from this distance it was possible to capture the terrain of the Moon. The Rhea is the second largest moons of Saturn among the 62 moons. It has a surface with a lot of ice and craters. In the composing of Rhea is including rocks and water ice. The researchers also searched the dust flying off the moon, which will determine the micrometeorites’ impacts rate on the surface of the Rhea.
The Earth has only one natural satellite, which is the Moon. The surface of the Moon has a lot of lunar craters.
The scientists, who were observing the Jupter and its moons, discovered a salt water on the surface of Jupiter’s moon Europa. They suggests, that if someone can get to the moon through the all difficulties, and drink the water, the taste of water will be familiar. The Europa moon of Jupiter, overed with cracks and salt chemicals. The moon also has a gigantic ocean with frozen exterior. Because of this, the moon of Jupiter, is one of the most likely places to find life in our solar system outside of the Earth. In Hawaii the scientists used the telescope Keck, and mapped in the surface of Europa, an infrared wavelengths with 40 times greater resolutions, which they hadn’t obtained in the previous.
NASA’s Cassini spacecraft has delivered view of Saturn, taken while the spacecraft was in Saturn’s shadow. The cameras were turned toward Saturn and the sun so that the planet and rings are backlit. This special, very-high-phase viewing geometry lets scientists study ring and atmosphere phenomena not easily seen at a lower phase. Since images like this can only be taken while the sun is behind the planet, this beautiful view is all the more precious for its rarity. The last time Cassini captured a view like this was in Sept. 2006, when it captured a mosaic processed to look like natural color.
Asteroid Toutatis which was discovered on January 4, 1989 by Christian Poll must once again get close to the Earth on December 12. The small asteroid, consisting of two parts of 4.6 km and 2.4 km can not harm our planet. Asteroid Toutatis 4179 was named after the Celtic god. This asteroid has an irregular form, and belongs to the category of Apollo. Asteroid Toutatis has diameter 5.4 kilometers, and the rotation period is 176 hours. At the closest distance the asteroid approached the Earth in 2004. This year, the asteroid must pass by our planet at a distance of 6.9 million kilometers from Earth.
Apophis previously known as 2004 MN4, a member of the Aten group of near-Earth asteroids which had been estimated by NASA as having a 1 in 5500 chance of striking the Earth in 2029. Concealing the energy of 65,000 atomic bombs asteroid Apophis with a mass of 50 million tonnes and a diameter of 320 meters will cross the orbit of the moon and rush to the Earth with a speed of 45 thousand miles per hour. In a collision of Apophis might do unseen troubles.
The Moon is the only natural satellite of the Earth and the fifth largest satellite in the Solar System. It is the largest natural satellite of a planet in the Solar System relative to the size of its primary, having a quarter the diameter of Earth but only 1⁄81 its mass. The Moon is the second densest satellite after Io, a satellite of Jupiter. It is in synchronous rotation with Earth, always showing the same face with its near side marked by dark volcanic maria that fill between the bright ancient crustal highlands and the prominent impact craters. The Moon is the brightest object in the sky after the Sun, although its surface is actually very dark, with a reflectance similar to that of coal.
Venus will pass in front of the sun from Earth’s perspective on Tuesday (June 5; Wednesday, June 6, in much of the Eastern Hemisphere), marking the last such Venus transit until 2117. However, there’s a chance to observe an Earth transit less than two years from now using a little creative thinking, some researchers note. In January 2014, Jupiter will witness a transit of Earth. And we can see it too, the astronomers say, by training NASA’s Hubble Space Telescope on the huge planet and studying the sunlight it reflects.
The full moon of June will dip through Earth’s shadow early Monday (June 4) in a partial lunar eclipse. Eclipses of the sun and moon always come in groups. A solar eclipse is always accompanied by a lunar eclipse two weeks before or after it, since over those two weeks the moon travels halfway around in its orbit and is likely to form another almost straight line with the earth and sun. If the solar eclipse is a “central” one (either total or annular) the lunar eclipse is likely to be one where the moon will only partially interact with the shadow of the Earth.