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Astonishing new Nasa image shows stars and planets as they form

New picture comes as JWST finds its first planet

Andrew Griffin
Thursday 12 January 2023 08:36 GMT
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NGC 346, shown here in this image from NASA’s James Webb Space Telescope Near-Infrared Camera (NIRCam), is a dynamic star cluster that lies within a nebula 200,000 light years away
NGC 346, shown here in this image from NASA’s James Webb Space Telescope Near-Infrared Camera (NIRCam), is a dynamic star cluster that lies within a nebula 200,000 light years away (SCIENCE: NASA, ESA, CSA, Olivia C. Jones (UK ATC), Guido De Marchi (ESTEC), Margaret Meixner (USRA) IMAGE PROCESSING: Alyssa Pagan (STScI), Nolan Habel (USRA), Laura Lenkić (USRA), Laurie E. U. Chu (NASA Ames) )
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A new image taken by the James Webb Space Telescope could show the very beginnings of planets.

The vast, swirling new image shows a young cluster of stars known as NGC 346, located in the Small Magellanic Cloud or SMC. They are found more than 200,000 lightyears from Earth.

Scientists believe that conditions in that star cluster are similar to those in the early universe, when it was giving birth to new stars at a rapid rate.

The image allows scientists to look at that process as it happens, watching stars as they are formed. But it might also include planets – which would suggest that new worlds were forming earlier in the universe than scientists realised.

NGC 346, shown here in this image from NASA’s James Webb Space Telescope Near-Infrared Camera (NIRCam), is a dynamic star cluster that lies within a nebula 200,000 light years away (SCIENCE: NASA, ESA, CSA, Olivia C. Jones (UK ATC), Guido De Marchi (ESTEC), Margaret Meixner (USRA) IMAGE PROCESSING: Alyssa Pagan (STScI), Nolan Habel (USRA), Laura Lenkić (USRA), Laurie E. U. Chu (NASA Ames))

Astronomers believe studying this region could help shed light on how the first stars formed during the “cosmic noon”, which is only two or three billion years after the Big Bang.

The new picture comes as scientists announced that JWST’s first planet had been found – and that it was remarkably similar to Earth.

Guido De Marchi, of the European Space Agency, and a co-investigator on the research team that helped produce the image, said: “We’re seeing the building blocks, not only of stars but also potentially of planets.

“And since the Small Magellanic Cloud has a similar environment to galaxies during cosmic noon, it’s possible that rocky planets could have formed earlier in the Universe than we might have thought.”

The NGC 346 houses protostars - which are clouds of gas and dust in space that are developing into stars.

Astronomers say studying protostars is the best way to understand how stars formed.

As stars form, they gather gas and dust, which can look like ribbons from the surrounding molecular cloud.

The material collects into a disk that feeds the central protostar.

While astronomers have previously detected gas around protostars within NGC 346, JWST’s observations have also detected dust in these disks.

Olivia Jones, Science and Technology Facilities Council Webb Fellow at STFC’s UK Astronomy Technology Centre and lead author on the upcoming paper, currently under peer review, said: “This is the first time we can detect the full sequence of star formation of both low and high mass stars in another galaxy.

“This means we have far more data to study at high resolution, offering us new information on how the birth of stars shapes their environment and even greater insight into the star formation process.”

Additional reporting by Press Association

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