‘Welcome to Jupiter!’ NASA’s Juno space probe arrives at giant planet

Published 9:13 AM EDT, Wed July 6, 2016
This artist rendering shows Juno orbiting Jupiter. The spacecraft will study Jupiter from a polar orbit, coming about 3,000 miles (5,000 kilometers) from the cloud tops of the gas giant.
PHOTO: NASA
This artist rendering shows Juno orbiting Jupiter. The spacecraft will study Jupiter from a polar orbit, coming about 3,000 miles (5,000 kilometers) from the cloud tops of the gas giant.
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Story highlights

Juno spacecraft has successfully started orbiting Jupiter

It was launched five years ago to study the planet's composition

Juno is a spinning, robotic probe as wide as a basketball court

(CNN) —  

NASA says it has received a signal from 540 million miles across the solar system, confirming its Juno spacecraft has successfully started orbiting Jupiter, the largest planet in our solar system.

Welcome to Jupiter!” flashed on screens at mission control at NASA’s Jet Propulsion Lab in Pasadena, California.

The Juno team cheered and hugged.

“This is phenomenal,” said Geoff Yoder, acting administrator for NASA’s Science Mission Directorate.

The probe had to conduct a tricky maneuver to slow down enough to allow it to be pulled into orbit: It fired its main engine for 35 minutes, effectively hitting the brakes to slow the spacecraft by about 1,212 miles per hour (542 meters per second).

“NASA did it again,” said Scott Bolton, Juno principal investigator.

On board NASA’s flying lab

“We’re there, we’re in orbit. We conquered Jupiter.”

“Through tones Juno sang to us and it was a song of perfection,” said Rick Nybakken, Juno Project Manager, referring to the audio signal the probe sent to indicate it was in orbit.

The Juno team celebrates at Mission Control at NASA's Jet Propulsion Laboratory in Pasadena, California.
PHOTO: Ringo H.W. Chiu/AP
The Juno team celebrates at Mission Control at NASA's Jet Propulsion Laboratory in Pasadena, California.

Juno was launched nearly five years ago on a mission to study Jupiter’s composition and evolution. It’s the first spacecraft to orbit Jupiter since Galileo. Galileo was deliberately crashed into Jupiter on September 21, 2003, to protect one of its discoveries – a possible ocean beneath Jupiter’s moon Europa.

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“Preliminary looks are that the spacecraft is performing well ,” said Guy Beutelschies, Director of Interplanetary Missions at Lockheed Martin Space Systems, the company that built the spacecraft.

Steve Levin, Juno Project Scientist, looked ahead to turning on the probe’s instruments again, after they were turned off in preparation for the tricky orbit maneuver.

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“What I’m really looking forward to is getting up close and personal with Jupiter,” he said.

Gas giant

01:01 - Source: CNN Business
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