Tuesday November 19, 2019
Home Science & Technology Albert Einste...

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

0
//
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!

Check out NewsGram for latest international news updates.

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.

NewsGram brings to you current foreign news from all over the world.

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

NewsGram is a Chicago-based non-profit media organization. We depend upon support from our readers to maintain our objective reporting. Show your support by Donating to NewsGram. Donations to NewsGram are tax-exempt. 

 

 

Next Story

US Researchers Redefine Conditions that Makes a Planet Habitable

The researchers also found that planets with thin ozone layers, which have otherwise habitable surface temperatures, receive dangerous levels of UV dosages

0
Planet
Instruments, such as the Hubble Space Telescope and James Webb Space Telescope, have the capability to detect water vapor and ozone on a Planet. Pixabay

A team of US researchers has redefined the conditions that make a Planet habitable by taking the star’s radiation and the planet’s rotation rate into account – a discovery that will help astronomers narrow down the search around life-sustaining planets.

The research team is the first to combine 3D climate modeling with atmospheric chemistry to explore the habitability of planets around M dwarf stars, which comprise about 70 per cent of the total galactic population.

Among its findings, the Northwestern team, in collaboration with researchers at the University of Colorado Boulder, NASA’s Virtual Planet Laboratory and the Massachusetts Institute of Technology, discovered that only planets orbiting active stars — those that emit a lot of ultraviolet (UV) radiation — lose significant water to vaporization.

Planets around inactive, or quiet, stars are more likely to maintain life-sustaining liquid water.

The researchers also found that planets with thin ozone layers, which have otherwise habitable surface temperatures, receive dangerous levels of UV dosages, making them hazardous for complex surface life.

“It’s only in recent years that we have had the modeling tools and observational technology to address this question,” said Northwestern’s Howard Chen, the study’s first author.

“Still, there are a lot of stars and planets out there, which means there are a lot of targets,” added Daniel Horton, senior author of the study. “Our study can help limit the number of places we have to point our telescopes”.

The research was published in the Astrophysical Journal.

Horton and Chen are looking beyond our solar system to pinpoint the habitable zones within M dwarf stellar systems.

M dwarf planets have emerged as frontrunners in the search for habitable planets.

Planet
A team of US researchers has redefined the conditions that make a Planet habitable by taking the star’s radiation and the planet’s rotation rate into account. Pixabay

They get their name from the small, cool, dim stars around which they orbit, called M dwarfs or “red dwarfs”.

By coupling 3D climate modeling with photochemistry and atmospheric chemistry, Horton and Chen constructed a more complete picture of how a star’s UV radiation interacts with gases, including water vapor and ozone, in the planet’s atmosphere.

Instruments, such as the Hubble Space Telescope and James Webb Space Telescope, have the capability to detect water vapor and ozone on exoplanets. They just need to know where to look.

ALSO READ: Fitbit to Unveil Latest Update for its Smartwatch

“‘Are we alone?’ is one of the biggest unanswered questions,” Chen said. “If we can predict which planets are most likely to host life, then we might get that much closer to answering it within our lifetimes.” (IANS)