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Kepler Telescope Declared Dead After Running Low On Fuel For Months: NASA

Kepler should remain in a safe, stable orbit around the sun.

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Kepler, NASA, tissue
This illustration made available by NASA shows the Kepler Space Telescope. As of October 2018, the planet-hunting spacecraft has been in space for nearly a decade. VOA

NASA’s elite planet-hunting spacecraft has been declared dead, just a few months shy of its 10th anniversary.

Officials announced the Kepler Space Telescope’s demise Tuesday.

Already well past its expected lifetime, the 9½-year-old Kepler had been running low on fuel for months. Its ability to point at distant stars and identify possible alien worlds worsened dramatically at the beginning of October, but flight controllers still managed to retrieve its latest observations. The telescope has now gone silent, its fuel tank empty.

“Kepler opened the gate for mankind’s exploration of the cosmos,” said retired NASA scientist William Borucki, who led the original Kepler science team.

Kepler, NASA
An artist’s composite of the Kepler telescope is seen in this undated NASA handout image. Two of Kepler’s four gyroscope-like reaction wheels, which are used to precisely point the spacecraft, failed in 2013, but engineers salvaged the telescope and it continued to peer into the cosmos for several more years. VOA

Super Earths found

Kepler discovered 2,681 planets outside our solar system and even more potential candidates. It showed us rocky worlds the size of Earth that, like Earth, might harbor life. It also unveiled incredible super Earths: planets bigger than Earth but smaller than Neptune.

NASA astrophysics director Paul Hertz estimated that anywhere from two to a dozen of the planets discovered by Kepler are rocky and Earth-sized in the so-called Goldilocks zone — the habitable area around a star where the temperature would permit existence of liquid water. But Kepler’s overall planet census showed that 20 percent to 50 percent of the stars visible in the night sky could have planets like ours in such a habitable zone for life, he said.

The $700 million mission even helped to uncover last year a solar system with eight planets, just like ours.

“It has revolutionized our understanding of our place in the cosmos,” Hertz said. “Now we know because of the Kepler Space Telescope and its science mission that planets are more common than stars in our galaxy.”

Kepler, NASA
An artist’s concept provided by NASA shows the Keplar Spacecraft moving through space. VOA

Almost lost in 2013 because of equipment failure, Kepler was salvaged by engineers and kept peering into the cosmos, thick with stars and galaxies, ever on the lookout for dips in in the brightness of stars that could indicate an orbiting planet.

“It was like trying to detect a flea crawling across a car headlight when the car was 100 miles away,” said Borucki said.

The resurrected mission became known as K2 and yielded 350 confirmed exoplanets, or planets orbiting other stars, on top of what the telescope had already uncovered since its March 7, 2009, launch from Cape Canaveral.

In all, close to 4,000 exoplanets have been confirmed over the past two decades, two-thirds of them thanks to Kepler.

Kepler focused on stars thousands of light-years away and, according to NASA, showed that statistically there’s at least one planet around every star in our Milky Way galaxy.

TESS, rover, NASA, mercuryKeplar, NASA
TESS, the Transiting Exoplanet Survey Satellite, is shown in this conceptual illustration obtained by Reuters on March 28, 2018. NASA sent TESS into orbit from the Kennedy Space Center in Florida aboard a SpaceX Falcon 9 rocket. VOA

Borucki, who dreamed up the mission decades ago, said one of his favorite discoveries was Kepler 22b, a water planet bigger than Earth but in an area where it is not too warm and not too cold — the type “that could lead to life.”

Successor spacecraft

A successor to Kepler launched in April, NASA’s Tess spacecraft, has its sights on stars closer to home. It’s already identified some possible planets.

Tess project scientist Padi Boyd called Kepler’s mission “stunningly successful.”

Kepler showed us that “we live in a galaxy that’s teeming with planets, and we’re ready to take the next step to explore those planets,” she said.

Another longtime spacecraft chasing strange worlds in our own solar system, meanwhile, is also close to death.

NASA’s 11-year-old Dawn spacecraft is pretty much out of fuel after orbiting the asteroid Vesta as well as the dwarf planet Ceres. It remains in orbit around Ceres, which, like Vesta, is in the asteroid belt between Mars and Jupiter.

NASA, Hubble, Keplar
The telescope has now gone silent, its fuel tank empty.Flickr

Two of NASA’s older telescopes have been hit with equipment trouble recently, but have recovered. The 28-year-old Hubble Space Telescope resumed science observations last weekend, following a three-week shutdown. The 19-year-old Chandra X-ray Telescope’s pointing system also ran into trouble briefly in October. Both cases involved critical gyroscopes, needed to point the telescopes.

Also Read: Parker Solar Probe Sets Record For Getting Closest To The Sun: NASA

Hertz said all the spacecraft problems were “completely independent” and coincidental in timing.

Now 94 million miles from Earth, Kepler should remain in a safe, stable orbit around the sun. Flight controllers will disable the spacecraft’s transmitters, before bidding it a final “goodnight.” (VOA)

Next Story

NASA Reveals First Person on Mars ‘is Likely to be a Woman’

NASA has come a long way since 1978, when the first six women joined NASA's astronaut corps

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NASA, mars
NASA will also have its first all-female spacewalk at the end of the month, when astronauts Anne McClain and Christina Koch will get to float around in space. The spacewalk will last about seven hours, according to the US space agency. Pixabay

The first person on Mars is ‘likely to be a woman’, NASA Administrator Jim Bridenstine has said.

“It’s likely to be a woman, the first next person on the Moon. It’s also true that the first person on Mars is likely to be a woman,” CNN cited Bridenstine as saying on a science and technology radio talk show “Science Friday”.

The NASA administrator did not identify a specific person but said women are at the forefront of the agency’s upcoming plans.

NASA will also have its first all-female spacewalk at the end of the month, when astronauts Anne McClain and Christina Koch will get to float around in space. The spacewalk will last about seven hours, according to the US space agency.

NASA, mars
NASA has come a long way since 1978, when the first six women joined NASA’s astronaut corps. Currently, women comprise 34 per cent of its active astronauts, according to the agency. Pixabay

“So these are great days. We have the first all-female spacewalk happening this month at the end of March, which is of course, National Women’s Month,” Bridenstine said.

Both McClain and Koch were part of the 2013 astronaut class, half of which were women. They came from the second largest applicant pool NASA has ever received — more than 6,100. The most recent class of flight directors was also 50 per cent women, NASA said.

 

ALSO READ: NASA’s Future Scientists Would Likely Be Better Equipped To Study The Lunar Material

NASA has come a long way since 1978, when the first six women joined NASA’s astronaut corps. Currently, women comprise 34 per cent of its active astronauts, according to the agency.

“NASA is committed to making sure we have a broad and diverse set of talent and we’re looking forward to the first woman on the moon,” Bridenstine said. (IANS)