Nation & World News

After A Decade, Comet-Chasing Spacecraft Nearly There

By Geoff Brumfiel on August 4th, 2014

It’s been a long journey, but it’s nearly over. On Wednesday, the European Space Agency’s Rosetta spacecraft will finally arrive at the comet 67P/Churyumov-Gerasimenko.

Humans have sent spacecraft hurtling past comets before, but Rosetta is doing something very different. It’s sidling up next to 67P to join the big, dirty ice ball on its journey past the sun.

Matching 67P’s velocity and orbit has been tricky. Rosetta took a torturous, decade-long path that led it past earth three times and Mars once, as well as a couple of asteroids. Ahead of its final approach, it came at the comet from behind at about half-a-mile a second, before a series of braking maneuvers earlier this year.

“It was a fantastic achievement just to get this far, I think,” says Matt Taylor, the European Space Agency’s Rosetta’s project scientist.

With its final thruster burn on Wednesday, it will bring itself into perfect step with the comet.

Then the science will begin.

Copyright 2014 NPR. To see more, visit http://www.npr.org/.

This entry was posted in News from NPR. Bookmark the permalink.

Comments are closed.

 

More Stories in News from NPR

Pope Francis opens the morning session of a two-week synod on family issues at the Vatican, on Saturday.

Vatican Bishops Scrap Opening To Gays, Divorced Members

Earlier this week an interim summary of the synod on family issues included conciliatory language on gays and on the taking of holy communion for divorced church members.


An artist's rendering of the flyby with Mars orbiters taking cover. Note that the image says "spacecraft not to scale."

Mars Probes Give Scientists Box Seats For Rare Comet Flyby

A “mountain-sized” comet known as Siding Spring will pass very close to the red planet, where orbiters from the U.S., Europe and India, hope to get close – but not too close — to the action.


Pro-democracy protesters set up new barricades after riot police retreated from a main road at Mong Kok shopping district in Hong Kong early Saturday.

Hong Kong Activists Clash With Police, Retake Protest Site

Pro-democracy protesters have replaced barricades in the congested Mong Kong district of the city hours after authorities dismantled the obstacles.


People stand on the island's south shore to feel the winds from approaching Hurricane Gonzalo, in Astwood Park, Bermuda on Friday. The storm has knocked out power to half of the residents of the British island territory.

Hurricane Gonzalo Hits Bermuda; Ana To Skirt Past Hawaii

In the British island territory, Gonzalo has wiped out power to roughly half of the island’s 70,000 inhabitants.


The Supreme Court early Saturday declined to block a Texas Voter ID law for the November election.

Supreme Court Lets Texas Enforce Voter ID Law For Nov. Election

With three justices dissenting, the high court’s ruling effectively blocks a lower federal court decision declaring the law restrictive and unconstitutional.


Thank you for your support

WUFT depends on the support of our community — people like you — to help us continue to provide quality programming to North Central Florida.
Become a Sustainer
I want to support FM 89.1/NPR
I want to support Florida's 5/PBS
Donate a Vehicle
Day Sponsorship Payments
Underwriting Payments