A family Thomassens in Oslo got a surprise when they visited their allotment garden cabin for the first time this season and found that a 585-gram (20 oz.) meteorite had ripped a hole through the roof. The space rock was discovered lying five or six metres away. Astrophysicist Knut Jorgen Roed Odegaard from the University of Oslo investigated the report and found it to be genuine meteorite. He told that we can tell immediately that it’s genuine from the burned crust, and we can also recognize it from how rough and unusual it is.
New evidence supports the idea that a huge space rock collided with our planet about 13,000 years ago and broke up in Earth’s atmosphere. This impact would have been powerful enough to melt the ground, and could have killed off many large mammals and humans. According to researchers it may even have set off a period of unusual cold called the Younger Dryas that began at that time. The idea that Earth experienced an asteroid or comet impact at the start of the Younger Dryas has been controversial, in part because there is no smoking-gun impact crater left behind as with other known events in our planet’s past.
A team of researchers from the NASA Lunar Science Institute (NLSI) at the Ames Research Center in Moffett Field, Calif., tracked the history of crater formation on the moon using digital maps, and found evidence of a dramatic shift in the velocity and energy of the asteroid bombardment during a period called the “lunar cataclysm” that occurred 4 billion years ago. According to researchers the timing of this shift could coincide with disturbances in the solar system’s main asteroid belt caused by changes in the movement of the outer planets.
The Japanese asteroid probe Hayabusa succeeded in returning more than 1,500 grains of dust from the asteroid 25143 Itokawa when it parachuted into the Australian outback in June 2010. Already, the samples from this 1,800 foot-long (550 meter) rubble pile have helped solve the longstanding mystery of where most meteorites striking our planet come from. To uncover still more details about asteroids, scientists analyzed the size, mineralogy, shape and geochemistry of five dust grains recovered by Hayabusa.
Scientists are keeping a close eye on a big asteroid that may pose an impact threat to Earth in a few decades.The space rock, which is called 2011 AG5, is about 460 feet (140 meters) wide. It may come close enough to Earth in 2040 that some researchers are calling for a discussion about how to deflect it. The object was discovered in January 2011 by Mount Lemmon Survey observers in Tucson, Ariz. While scientists have a good bead on the space rock’s size, its mass and compositional makeup are unknown at present.
According to NASA asteroid 2012 DA14 with a diameter of about 50 meters, discovered by Spanish astronomers on Thursday, February 23, will pass by Earth next year, flying closer than some man-made satellites.
According to researchers the nomad planets could be surprisingly common in our bustling galaxy. The study predicts that there may be 100,000 times more of these wandering, homeless planets than stars in the Milky Way. If this is the case, these intriguing cosmic bodies would belong to a whole new class of alien worlds, shaking up existing theories of planet formation. These free-flying planets may also raise new and tantalizing questions in the search for life beyond Earth.According to researchers and while nomad planets cannot benefit from the heat given off from their parent stars, these worlds could generate heat from tectonic activity or internal radioactive decay.
According to astronomers using data from NASA’s Chandra X-ray Observatory the giant black hole at the center of the Milky Way may be vaporizing and devouring asteroids, which could explain the frequent flares observed. For several years Chandra has detected X-ray flares about once a day from the supermassive black hole known as Sagittarius A*, for short Sgr A*. The flares last a few hours with brightness ranging from a few times to nearly one hundred times that of the black hole’s regular output.
On Tuesday, January 31, asteroid 433 Eros will come closer to Earth than it has in 37 years, traveling across the night sky in the constellations Leo, Sextans and Hydra.