Astronomers have found the oldest oxygen in the Universe

In a distant galaxy scientists find oldest oxygen in universe and stars from edge of cosmic dawn

Distant galaxy hints at universe's earliest stars

At the time of the observation, the Japanese researchers noticed that this galaxy housed numerous 300 million years old stars.

"This galaxy is seen at a time when the universe was only 500m years old and yet it already has a population of mature stars", said Nicolas Laporte, a researcher at University College London in the United Kingdom and second author of the new paper.

So now the latest such discovery was made by a team of astronomers using the Atacama Large Millimeter/submillimeter Array and European Southern Observatory's Very Large Telescope when observing the very distant galaxy MACS1149-JD1.

The discovery could provide more information on how the early universe looked like.

This means astronomers were looking at the galaxy just 500 million years after the Big Bang - when the Universe was about 3.5 percent of its current age.

It's not the first time that ALMA has found distant sources of oxygen: The record has been broken many times. All the large galaxies we see in the nearby Universe have these central giants that are millions of times the mass of our Sun; and it is an interesting debate as to how early this phenomenon emerged in cosmic history. This is because stars are the burning crucibles that convert hydrogen and helium into larger elements - without stars, there is no oxygen."I was thrilled to see the signal of the distant oxygen in the ALMA data", said lead author Takuya Hashimoto, a researcher at Osaka Sangyo University and the National Astronomical Observatory of Japan, in a press release.

Man shoots ex-wife's 3 children, her boyfriend dead
The children were identified as 4-year-old Drake Painter, 6-year-old Caydence Painter and 8-year-old Odin Painter. The Medical Examiner said Thursday afternoon the cause of death for the children was multiple gunshot wounds.

The universe's first stars may have formed a mere 250 million years after the big bang-hundreds of millions of years earlier than thought, according to a new study. They detected a signal from ionised oxygen whose infrared light was stretched ten-fold to microwave wavelengths by the expansion of the Universe.

In this composite image, a galaxy cluster observed by the Hubble Space Telescope is shown along with a faint member (inset) known as MACS1149-JD1 that was observed by the ALMA instrument. "And we find this galaxy formed its stars when the Universe was only 250 million years old, which is like 2% of the present age of the Universe".

"Determining when cosmic dawn occurred is akin to the "Holy Grail" of cosmology and galaxy formation", said Professor Richard Ellis, senior astronomer at University College London. The MACS1149-JD1 observation shows galaxies must have existed before any that are now detectable.

"There is renewed optimism we are getting closer and closer to witnessing directly the birth of starlight. Since we are all made of a processed stellar material, this is really finding our own origins". They measured the frequency of a peak in the galaxy's spectrum that comes from ionized oxygen gas. Please refer to "Expressing the distance to remote objects" for details.

Another galaxy, GN-z11, is estimated to be 13.4 billion light years away based on observations with the Hubble Space Telescope, but those measurements were not as precise, they added.

Latest News