Canadian-built lasers helped guide NASA’s OSIRIS-REx to the asteroid and the spacecraft has orbited within a couple hundred metres of its surface
A group of Canadian scientists is awaiting delivery of an outer space postcard from the past.
A Canadian-built set of lasers helped guide OSIRIS to its destination and produced a relief map of Bennu accurate to within a couple centimetres of height. “The Earth was formed by asteroids getting together,” he said. “Studying asteroids helps you understand the origins of our planet.”As well, Bennu is from an area of space that cooled off well before the central part of what became the solar system, “freezing” those materials before they were altered by heat. And grabbing samples directly from the asteroid’s surface means scientists don’t have to account for the effects that flying through Earth’s atmosphere has on meteorites.
Some scientists think those compounds could offer clues to how life began on Earth – although Hildebrand points out planets such as Mars and Venus are also showered with such material and don’t appear to host life.
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