Scientists led by Sunao Hasegawa of JAXA, the Japanese space agency, have reported the discovery of two red objects in the asteroid belt between Mars and Jupiter. These intruding objects are believed to be formed beyond Neptune and sort of crept into their current sockets. The objects are asteroids, nicknamed 203 Pompeja and 269 Justitia. […]
Monthly Archives: July 2021
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Artistic interpretation of an asteroid belt. Picture: Nasa They are red, they are big enough, and they have nothing to do in the main asteroid belt, but their discovery confirms the complex conditions in place when the solar system was still forming. New research published in The Astrophysical Journal Letters details the discovery of two […]
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An unexpected discovery could help us understand where life on Earth comes from. Red rocks A team of astronomers have spotted two mysterious objects in the asteroid belt between Mars and Jupiter that appear to be loaded with organic matter, possibly including the building blocks of life on Earth, The New York Times reports. The […]
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Illustration of a large asteroid colliding with Earth 66 million years ago in the Yucatan Peninsula … [+] in (which is modern) Mexico. This impact is believed to have resulted in the deaths of dinosaurs and other groups of animals. Getty A meteorite about 10 kilometers (6.2 miles) in diameter that would have wiped out […]
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The discovery, if correct, would offer evidence of planetary migration at the start of the solar system, particularly in support of an idea called the Nice model, with Saturn, Uranus, and Neptune all moving outward. , and Jupiter slightly inward, over a few hundred million years. . This would have disrupted the organic matter-laden asteroids […]
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Artist’s illustration of the asteroid belt of our solar system. Credit: NASA / McREL Asteroids, sometimes referred to as minor planets, are rocky remnants of the initial formation of our solar system about 4.6 billion years ago. The number of currently known asteroids is over a million! Most of this ancient space rubble can be […]
Terrestrial planet
Sizes of the nuclei of terrestrial planets determined by the magnetic field of the sun
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The early Sun’s magnetic field may have driven the processes that resulted in the iron-rich cores of the terrestrial planets. Credit: NASA / SDO / AIA / LMSAL. The iron-nickel metal cores of terrestrial planets decrease in size relative to the size of the planets, with increasing distance from the Sun. Mercury, the planet closest […]