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Albert Einstein’s Century-old Prediction comes True: Third Gravitational Waves detected by Scientists

New detection of the gravitational waves is the third time that Einstein's theory is validated

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Black hole. Wikimedia
  • For the third time, scientists have detected the gravitational waves validating Albert Einstein’s predictions
  • The prediction was made a century ago
  • The latest detection has strong implications on the nature of black holes and dark matter

June 04, 2017: The third set of gravitational waves has recently been detected by LIGO (Laser Interferometer Gravitational-Wave Observatory), a complex yet effective experiment to detect gravitational waves. The detection validates Albert Einstein’s theory that space compresses and stretches itself.

The prediction was made a century ago. The successful detection also holds significance for the true nature of black holes and dark matter. It puts the predicted theory to test!

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The historic moment was witnessed by the international research team, including scientists from India. The faint hum of the waves can only be heard by the cutting edge science and sensitive detection of LIGO. The wave is produced when two black holes merge together.

The latest detection is called GW170104 for which the observations began last year. Gravitational waves were first observed in September 2015 and then in December of the same year.

Black Holes merging. Wikimedia

The third waves have been detected twice as far from the Earth as the earlier two detections. The combined black hole has a mass about 49 times more than that of the sun. The merger of the two black holes can be traced back 3 billion years ago.

The waves are studied in a research paper that has received acceptance for publication by journal ‘Physical Review Letters’. IIT Madras has contributed significantly to the study. It models the gravitational waves sources and tests the consistency of signals.

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Scientists say that the new detection advances their goal of observing ancient events through waves, otherwise invisible through other means.

LIGO is based in the US. But India is working to set up its own observatory as well. India hopes to set it up by 2024. India looks to contribute to the global scientific knowledge.

– by Saksham Narula of NewsGram. Twitter: @Saksham2393

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SpaceX Plans To Send NASA Astronauts To Space in Q2 This Year

As part of the test on Sunday, SpaceX configured Crew Dragon to trigger a launch escape about 1.5 minutes after liftoff

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NASA
It took a lot of work between NASA and SpaceX to get to this point. Pixabay

After NASA and SpaceX successfully completed a launch escape demonstration of the company’s Crew Dragon spacecraft and Falcon 9 rocket, Elon Musk said that his aerospace company aims to send NASA astronauts to space between April and June this year.

This was the final major flight test of the spacecraft before it begins carrying astronauts to the International Space Station (ISS) under NASA’s Commercial Crew Programme, the US space agency said in a statement on Sunday.

With this test now complete, the next big flight of the Crew Dragon will have people on board: NASA astronauts Bob Behnken and Doug Hurley.

“We’re highly confident that the hardware will be ready in Q1, most likely at the end of February but no later than March. And we think it appears probable that the first crewed launch would occur in the second quarter,” said Musk after the successful uncrewed test of its Crew Dragon capsule’s in-flight launch escape capabilities.

Musk said that if all goes well, the first crewed flight on the Crew Dragon could take place in the second quarter of this year.

“This critical flight test puts us on the cusp of returning the capability to launch astronauts in American spacecraft on American rockets from American soil,” said NASA Administrator Jim Bridenstine. “We are thrilled with the progress NASA’s Commercial Crew Programme is making and look forward to the next milestone for Crew Dragon.”

As part of the test on Sunday, SpaceX configured Crew Dragon to trigger a launch escape about 1.5 minutes after liftoff. All major functions were executed, including separation, engine firings, parachute deployment and landing. Crew Dragon splashed down at 10:38 am just off the Florida coast in the Atlantic Ocean.

“As far as we can tell thus far, it’s a picture perfect mission. It went as well as one can possibly expect,” said Musk. “This is a reflection of the dedication and hard work of the SpaceX and NASA teams to achieve this goal. Obviously, I’m super fired up. This is great.”

NASA
After NASA and SpaceX successfully completed a launch escape demonstration of the company’s Crew Dragon spacecraft and Falcon 9 rocket, Elon Musk said that his aerospace company aims to send NASA astronauts to space between April and June this year. Wikimedia Commons

Prior to the flight test, teams completed launch day procedures for the first crewed flight test, from suit-up to launch pad operations. The joint teams now will begin the full data reviews that need to be completed prior to NASA astronauts flying the system during SpaceX’s Demo-2 mission. “The past few days have been an incredible experience for us,” said astronaut Doug Hurley.

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“Today, we watched the demonstration of a system that we hope to never use, but can save lives if we ever do. It took a lot of work between NASA and SpaceX to get to this point, and we can’t wait to take a ride to the space station soon,” he said in the NASA statement. (IANS)