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NASA launched a first-of-its kind mission on Saturday to study Jupiter’s Trojan asteroids, two large clusters of space rocks that scientists believe are remnants of primordial material that formed the solar system’s outer planets.
🚀 Our #LucyMission launched to explore the Trojan asteroids, which are like ancient time capsules from our early solar system. Plus, @NASA_Orion‘s stage adapter was added to our @NASA_SLS rocket for the #Artemis I launch. More stories this week at NASA: https://t.co/MclRPuo0wz pic.twitter.com/667KKSaqco
— NASA (@NASA) October 16, 2021
The space probe, dubbed Lucy and packed inside a special cargo capsule, lifted off on schedule from Cape Canaveral Air Force Station in Florida at 5:34 a.m. EDT (0934 GMT), NASA said. It was carried aloft by an Atlas V rocket from United Launch Alliance (UAL), a joint venture of Boeing Co and Lockheed Martin Corp.
Lucy’s mission is a 12-year expedition to study a record number of asteroids. It will be the first to explore the Trojans, thousands of rocky objects orbiting the sun in two swarms – one ahead of the path of giant gas planet Jupiter and one behind it.
The largest known Trojan asteroids, named for the warriors of Greek mythology, are believed to measure as much as 225 kilometers (140 miles) in diameter. Scientists hope Lucy’s close-up fly-by of seven Trojans will yield new clues to how the solar system’s planets came to be formed some 4.5 billion years ago and what shaped their present configuration.
Believed to be rich in carbon compounds, the asteroids may even provide new insights into the origin of organic materials and life on Earth, NASA said.
As the #LucyMission carries her own time capsule to the Trojan asteroids over the next 12 years, we encourage you to put together a time capsule of your own with messages to yourself & tokens from the current era. Share it w/ the hashtag #LucyTimeCapsule: https://t.co/9m91f6Diyk pic.twitter.com/IojRFqiedg
— NASA (@NASA) October 16, 2021
“The Trojan asteroids are leftovers from the early days of our solar system, effectively the fossils of planet formation,” principal mission investigator Harold Levison of the Southwest Research Institute in Boulder, Colorado, was quoted by NASA as saying.
No other single science mission has been designed to visit as many different objects independently orbiting the sun in the history of space exploration, NASA said.
As well as the Trojans, Lucy will do a fly-by of an asteroid in the solar system’s main asteroid belt, called Donald Johanson in honor of the lead discoverer of the fossilized human ancestor known as Lucy, from which the NASA mission takes its name.
The Lucy fossil, unearthed in Ethiopia in 1974, was in turn named for the Beatles hit “Lucy in the Sky with Diamonds.”
“To be out here this morning is absolutely mind-expanding… to see what the creativity of the human mind can do.”
Paleoanthropologist Donald Johanson, who found the fossil for which the #LucyMission is named, reflects on launch & the origin of the name: https://t.co/tWQwAG6AaC pic.twitter.com/MDZKHcYsSW
— NASA (@NASA) October 16, 2021
Lucy the asteroid probe will make spaceflight history in another way. Following a route that circles back to Earth three times for gravitational assists, it will be the first spacecraft ever to return to Earth’s vicinity from the outer solar system, according to NASA.
The probe will use rocket thrusters to maneuver in space and two rounded solar arrays, each the width of a school bus, to recharge batteries that will power the instruments contained in the much smaller central body of the spacecraft.
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