NASA’s Nancy Grace Roman House Telescope, set to launch this weekend, could shed new gentle on the character of darkish power — that mysterious drive inflicting the universe to broaden.
Transcript
A MARTÍNEZ, HOST:
This Sunday, NASA’s newest area telescope is scheduled to elevate off from Cape Canaveral in Florida. The $4.3 billion observatory is anticipated to disclose details about the character of the universe and uncover a large number of planets orbiting distant stars. Joe Palca has this preview of the Roman telescope’s mission.
JOE PALCA, BYLINE: The telescope is known as for Nancy Grace Roman, NASA’s first chief astronomer. Considered one of its objectives is to seek out extra exploding stars, referred to as Kind Ia supernovas. Cosmologist Daniel Scolnic of Duke College says this can assist validate the accepted mannequin that explains why the universe is increasing as quick as it’s.
DANIEL SCOLNIC: In the previous few years, there have been measurements saying that mannequin may be mistaken. And that is one thing that Roman will completely nail – whether or not the mannequin’s proper or mistaken.
PALCA: One other purpose of the brand new observatory is to spend a month surveying all the celebrities within the Milky Approach galaxy. Julie McHenry is a Roman undertaking scientist. She says despite the fact that Roman has broadly the identical sensitivity and sharpness of imaginative and prescient because the presently orbiting Hubble House Telescope, its design lets it do issues a lot sooner.
JULIE MCHENRY: In order that one month of observations to survey our Milky Approach galaxy would take a couple of century with Hubble.
PALCA: Roman is designed to make catalogs of huge swaths of the sky. This could outcome within the discovery of 100,000 new planets utilizing a way primarily based on one thing referred to as gravitational microlensing. Scott Gaudi is an astronomer on the Ohio State College.
SCOTT GAUDI: We’re searching for planets which are simply utterly undetectable by every other technique, together with planets which are on the middle of our galaxy and planets which are very analogous to our personal photo voltaic system planets like Jupiter, Saturn, Uranus and Neptune.
PALCA: Along with new planets, Roman must also reveal new galaxies, serving to astronomers to get a greater thought of the large-scale construction of the universe. However predicting what will probably be Roman’s best accomplishment is a difficult enterprise. Wendy Freedman is an astronomer on the College of Chicago.
WENDY FREEDMAN: The historical past of astronomy actually has proven if you get a brand new functionality, and particularly survey functionality, you study one thing new, one thing sudden.
PALCA: After it leaves Earth, it’ll take Roman about three months to cruise to its deliberate observing location about 1,000,000 miles from Earth. For NPR Information, I am Joe Palca.
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