Home » NASA’s Lucy blasts off on historic mission to Jupiter’s Trojan asteroids

NASA’s Lucy blasts off on historic mission to Jupiter’s Trojan asteroids

NASA's Lucy spacecraft launches on first ever mission to Jupiter's Trojan asteroids

A United Start Alliance Atlas V 401 rocket flared to life under the deal with of darkish at Cape Canaveral Room Pressure Station in Florida just after 2:30 a.m. local time Saturday morning. Encased inside of the pencil-shaped payload fairing atop the rocket was NASA’s newest interplanetary explorer: a spacecraft named Lucy

It was the 100th launch from Cape Canaveral House Start Complicated 41. Around 58 minutes soon after start the probe, which is about as broad as a bus, was introduced from the second phase rocket booster to begin its extended journey towards Jupiter’s orbit. The United Launch Alliance crew celebrated with hugs and clapping in its mission handle place. 

“It was one of the most fascinating activities of my everyday living,” Hal Levison, principal investigator of the Lucy mission, mentioned write-up-start. “It was genuinely brilliant, in the outdated-fashioned that means of the phrase.”   

More than the following two many years, Lucy will use Earth’s gravity twice to swing toward the photo voltaic system’s premier world. But the gasoline big isn’t Lucy’s vacation spot. As an alternative, it’s going to discover a collection of asteroids, locked in Jupiter’s orbit, recognized as the Trojans.

These asteroids have hardly ever been examined up close right before and transfer as large swarms, or camps, at the “Lagrangian details” in Jupiter’s orbit. The Lagrangian details are locations exactly where gravity’s drive and pull lock the camps in position, main and trailing Jupiter in its journey all around the sunshine in perpetuity.

The collection of amorphous house rocks is like a sequence of cosmic fossils, giving a window into the earliest era of our photo voltaic program, some 4.6 billion yrs back. Lucy will act as a cosmic palaeontologist, flying earlier these eight distinctive “fossils” at a length and studying their surfaces with infrared imagers and cameras. 

“No spacecraft has visited so several objects just before, and every is a prospective window into the substance and disorders of the early solar technique,” claims Alan Duffy, an astrophysicist at Swinburne University in Melbourne.   

The concept of examining fossils is core to the mission’s philosophy — suitable down to its name. “Lucy” is derived from a hominid skeleton discovered in Ethiopia in 1974. The skeleton was dubbed Lucy since the Beatles’ track Lucy in the Sky With Diamonds was taking part in in the scientists’ camp following the locate. Words from all four Beatles are contained on a plaque inside the spacecraft

While the early morning start and separation was marked down as a success on Lucy’s comprehensive to-do list, the spacecraft experienced to prevail over one last, giant hurdle right before it was ready to sail out of Earth’s backyard. About a person hour into its flight, the probe seasoned “20 minutes of terror,” as it unfurled its 24 foot huge decagonal photo voltaic panels

The panels are important to the spacecraft’s accomplishment and will ability Lucy during the 12-calendar year journey towards the Trojans. They can provide about 500 watts of electrical power — about the identical quantity of energy vital to operate a washing machine, in accordance to NASA. And Lucy will want each and every watt, due to the fact it’s going to be the farthest solar-powered spacecraft really should it get to its destinations.

Lucy’s elaborate trajectory and flyby dates.


Ninety-a single minutes soon after launch, the group acquired a signal from Lucy confirming the solar panels experienced deployed. “Things ended up splendid now,” said Omar Baez, the senior launch director of NASA’s Start Providers Application. 

That indicates Lucy is alive and effectively and now there is a ton of ground to address just before it reaches its initially object of fascination: Donaldjohanson, a place rock positioned in the asteroid belt between Mars and Jupiter. That flyby will arise in April 2025. 

From there, Lucy will swing toward the Trojans, achieving four worlds during 2027 and 2028 in the Greek camp, the swarm of rocks top Jupiter in orbit. An additional Earth flyby will assist propel Lucy to its ultimate targets, Patroclus and its binary companion Menoetius, in the Trojan camp trailing Jupiter in 2033. In full, the spacecraft will protect 4 billion miles.

Lucy’s bold main mission will never always close with Patroclus and Menoetius, both. The spacecraft’s orbit will see it drift by means of the swarms for many years to occur. NASA has a great monitor history with extending missions — but you may have to hold your fingers crossed that all the things goes very well for the next decade.