Juno spacecraft enters Jupiter's orbit

Nearly five years after its launch, NASA's Juno spacecraft achieved orbit around Jupiter late Monday.

At NASA's Jet Propulsion Lab in Southern California, thrilled scientists received a signal from the spacecraft at 11:53 p.m. Eastern time announcing it was in orbit after a 35-minute engine burn. The most difficult part of the entrance took place at around 10:30 p.m., when Juno passed through a belt of radiation where electrons went back and forth at nearly the speed of light and could have easily fried the spacecraft's electronics, but they were protected by a titanium vault.

The largest planet in the solar system, Jupiter was likely the first planet formed after the sun and scientists say it could "hold the keys to understanding the origin of the solar system," The New York Times reports. "Juno is really searching for some hints about our beginnings, how everything started," Scott Bolton, Juno's principal investigator, said. "But these secrets are pretty well guarded by Jupiter." The craft's instruments were designed to measure the magnetic and gravitational fields of Jupiter, and its cameras will likely capture images of new moons. Juno's scientific instruments were turned off before it arrived at Jupiter, and will be turned back on in two days. On Aug. 27, the spacecraft will get its first up-close look at the planet.

Subscribe to The Week

Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

SUBSCRIBE & SAVE

Sign up for The Week's Free Newsletters

From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.

From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.

Sign up