Calculations of the orbital evolution of two major objects of the main asteroid belt, the dwarf planet Ceres ans the asteroid Vesta. showed that in the future they may collide.The collide of Ceres and Vesta possible with a probability of 0.2% per billion years.Laskar and his colleagues conducted computer simulations of the evolution of the solar system, considering the behavior of the eight planets, Pluto, Ceres, and the four largest asteroids Pallas, Vesta, Iris and Bamberg, located in the main asteroid belt between Mars and Jupiter
On Saturday (July 16), 2011, NASA Dawn Spacecraft arrived at the huge asteroid Vesta, making it the first spacecraft ever to orbit an object in the solar system’s asteroid belt.The Dawn spacecraft entered orbit around Vesta after a four-year chase and will spend about a year studying the huge space rock.
Asteroid 3552 Don Quixote was discovered by Paul Wilde September 26, 1983. According to scientists this asteroid is can be included in a group of comets of Jupiter.More recently, scientists conducted an experiment in which the asteroid was cloned 100 times, obtaining hypothetical asteroids that have helped to study the orbital evolution of bodies of this type.
According to scientists asteroid 2011 MD, whose size is between 8 to 18 meters, on Monday, June 27, 2011, at 13.26 GMT (17.26 GMT), will fly close to Earth, below the orbits of geostationary satellites.It will fly at a distance of 0.00012 AU from Earth, about 18 thousand kilometers, which is half the height of the geostationary satellites (about 36 thousand kilometers).Asteroid 2011MD was discovered only two days ago, on June 22, 2011.
The European Space Agency’s Rosetta spacecraft pursued the comet 67-P/Churyumov-Gerasimenko for more than seven years. And now finally Rosetta can take a series of 52 pictures from a distance of about 101 million miles (163 million kilometers) from comet 67-P/Churyumov-Gerasimenko.67-P/Churyumov-Gerasimenko is about 2.4 miles (4 km) across and completes one orbit around the sun every 6.6 years.
With the help NASA’s Dawn spacecraft , astronomers can receive 20 new images of Vesta asteroid, on June 1. The images show a dark feature near Vesta’s equator moving from left to right across the field of view as Vesta rotates. They also show Vesta’s jagged, irregular form , hinting at the enormous crater known to exist at Vesta’s south pole.
Scientists think that some asteroids may have been like “Molecular Factories”, which generat life’s ingredients and ship them to Earth by meteorite impacts. In January 2000, a large meteoroid exploded in the atmosphere over northern British Columbia, Canada, and rained fragments across the frozen surface of Tagish Lake
Irish astronomers have discovered a new asteroid 2010-SO16, which revolves around the Earth at a distance of 19 million miles away. According to scientists, the object with a diameter of 400 miles could be formed 4.4 million years ago, during the collision of Earth with a huge celestial body
Recently with the help NASA’s fireball-observing network, based at Marshall Space Flight Center in Huntsville, Ala, researchers can see a brilliant meteor through the sky above Georgia.The meteor was caused by a human-size chunk of an unknown comet.