James Webb discovers the oldest galaxy in the universe – a star system 13.5 billion years old

James Webb discovers the oldest galaxy in the universe – a star system 13.5 billion years old

James Webb discovers the oldest galaxy in the universe – a 13.5 billion year old star system formed 300 million years after the Big Bang

  • James Webb discovered a 13.5 billion year old galaxy called GN-z13
  • This galaxy was formed just 300 million years after the Big Bang which occurred 13.8 billion years ago
  • The previous record holder, discovered by the Hubble telescope in 2015, was GN-z11 which dates back 400 million years after the birth of the universe.

NASA’s James Webb Telescope (JWST) has discovered a 13.5 billion year old galaxy that is now the oldest universe seen by human eyes.

The galaxy, called GLASS-z13 (GN-z13), formed just 300 million years after the Big Bang that occurred 13.8 billion years ago.

The previous record holder, discovered by the Hubble telescope in 2015, was GN-z11 which dates back 400 million years after the birth of the universe.

JWST captured a glimpse of GN-z13 using its Near Infrared Camera (NIRCam) instrument, which is able to detect live the first stars and galaxies.

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NASA's James Webb Telescope (JWST) has discovered a 13.5 billion year old galaxy that is now the oldest universe seen by human eyes.  The galaxy, called GLASS-z13 (GN-z13), formed just 300 million years after the Big Bang that occurred 13.8 billion years ago.

NASA’s James Webb Telescope (JWST) has discovered a 13.5 billion year old galaxy that is now the oldest universe seen by human eyes. The galaxy, called GLASS-z13 (GN-z13), formed just 300 million years after the Big Bang that occurred 13.8 billion years ago.

While investigating the area near GN-z13, JWST also spotted GN-z11, and scientists from the Harvard and Smithsonian Center of Astrophysics in Massachusetts note that both galaxies are very small, reports New Scientist.

GN-z13 is about 1600 light-years away and GLASS z-11 is 2300 light-years away.

This is compared to our own Milky Way which is about 100,000 light years in diameter.

The paper, published in arXiv, notes that the two galaxies have a mass of one billion suns, noting that this is because they formed shortly after the Big Bang.

While investigating the area near GN-z13 (top), JWST also spotted GN-z11 (bottom) and scientists from the Harvard and Smithsonian Center of Astrophysics in Massachusetts note that both galaxies are very small

While investigating the area near GN-z13 (top), JWST also spotted GN-z11 (bottom) and scientists from the Harvard and Smithsonian Center of Astrophysics in Massachusetts note that both galaxies are very small

The previous record holder, discovered by the Hubble telescope in 2015, is GN-z11 (pictured) which dates back 400 million years to the birth of the universe

The previous record holder, discovered by the Hubble telescope in 2015, is GN-z11 (pictured) which dates back 400 million years to the birth of the universe

The team suggests this happened as galaxies grew and engulfed stars in the region.

“These two objects already impose new constraints on the evolution of galaxies at the time of cosmic dawn,” explain the researchers in the article.

“They indicate that the discovery of GNz11 was not just a matter of luck, but that there likely exists a population of UV light sources with very high star-forming efficiencies capable of compiling.”

Gabriel Brammer of the Niehls Bohr Institute in Denmark, a member of the GLASS team and co-discoverer of GN-z11, told New Scientist that further analysis will be needed to confirm the distance to the two galaxies.

“They are very compelling candidates,” he says. “We were quite confident that JWST would see distant galaxies. But we’re a little surprised at how easy it is to spot them.

Brammer made headlines this week when he posted a never-before-seen image taken by JWST.

The article notes that both galaxies have a mass of a billion suns, noting that this is because they formed shortly after the Big Bang.  Pictured are the locations of the galaxies

The article notes that both galaxies have a mass of a billion suns, noting that this is because they formed shortly after the Big Bang. Pictured are the locations of the galaxies

Gabriel Brammer, a member of the GLASS team and co-discoverer of GN-z11, said further analysis will be needed to confirm the distance to the two galaxies.  Brammer made headlines this week when he posted a never-before-seen image taken by JWST (pictured)

Gabriel Brammer, a member of the GLASS team and co-discoverer of GN-z11, said further analysis will be needed to confirm the distance to the two galaxies. Brammer made headlines this week when he posted a never-before-seen image taken by JWST (pictured)

The astronomer shared a stunning photo of the spiraling arms of the “ghost galaxy”, formerly known as NGC 628 or Messier 74.

Webb took the image of NGC 628 on July 17 and sent the data back to Earth where it was stored in the Barbara Mikulski Archive for Space Telescopes (MAST), which is open to the public.

Brammer’s image caught the attention of other astronomers and space enthusiasts, who wanted to know more about how he created the image and what they were looking at.

“For a little more context, the purple color here is actually ‘real’ in the sense that the emission from interstellar cigarette smoke (PAH molecules) makes the filters used for the blue and red channels brighter compared to the green,” Brammer wrote. in a tweet.

THE JAMES WEBB TELESCOPE

The James Webb Telescope has been described as a “time machine” that could help unlock the secrets of our universe.

The telescope will be used to look back at the first galaxies born in the early universe more than 13.5 billion years ago, and observe the sources of stars, exoplanets and even moons and planets in our solar system.

The vast telescope, which has already cost more than $7bn (£5bn), is seen as the successor to the orbiting Hubble Space Telescope

The James Webb Telescope and most of its instruments have an operating temperature of around 40 Kelvin – about minus 387 Fahrenheit (minus 233 Celsius).

It is the largest and most powerful orbiting space telescope in the world, capable of observing 100 to 200 million years after the Big Bang.

The orbiting infrared observatory is designed to be about 100 times more powerful than its predecessor, the Hubble Space Telescope.

NASA likes to think of James Webb as a successor to Hubble rather than a replacement, as the two will be working in tandem for some time.

The Hubble Telescope was launched on April 24, 1990 via Space Shuttle Discovery from Kennedy Space Center in Florida.

It circles the Earth at a speed of approximately 17,000 mph (27,300 km/h) in low Earth orbit at an altitude of approximately 340 miles.

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