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Measure a distant galaxy!

Measure a distant galaxy!

The James Webb Space Telescope has discovered the most distant galaxy ever measured. The galaxy, called JADES-GS-z14-0, is believed to have existed 290 million years after the Big Bang. NASA said on Thursday that it has special features that are important for understanding the early universe.

As co-discoverers Stefano Cargnani and Kevin Heinlein explain, JADES-GS-z14-0 is not the type of galaxy predicted by theoretical models and computer simulations for the early universe. That's why they're “excited about the extraordinary diversity of galaxies at the cosmic dawn.”

In astronomy, looking into the distance also means traveling into the past. For example, it takes eight minutes for sunlight to reach Earth, so people see it as it was eight minutes ago.

Light from the newly discovered galaxy took more than 13.5 billion years to reach Earth, and the Big Bang occurred 13.8 billion years ago. According to NASA, the galaxy is “exceptionally bright for its distance.” It is estimated that its mass is several hundred million times the mass of the Sun.

The high-tech observatory, which was also built with German participation, was launched into space in December 2021 after decades of preparation. It is now more than one and a half million kilometers from Earth. Explores the early days of the universe.