Maisie's Galaxy (also known as CEERS J141946.36+525632.8) is a distant

galaxy A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. ...

located at z=11.4 that existed 390 million years after the beginning of the universe.

Background

Discovered in 2022 using the

James Webb Space Telescope The James Webb Space Telescope (JWST) is a space telescope which conducts infrared astronomy. As the largest optical telescope in space, its high resolution and sensitivity allow it to view objects too old, distant, or faint for the Hubble Spa ...

(JWST) in the CEERS field, Maisie's Galaxy has high

star formation Star formation is the process by which dense regions within molecular clouds in The "medium" is present further soon.-->interstellar space

rates. It was named after the nine-year-old daughter of the person who discovered it. In February 2023, the CEERS teams followed up their high-redshift candidates with observatory's NIRSpec (Near-Infrared Spectrograph) instrument to measure precise, spectroscopic redshifts. One candidate (Maisie's Galaxy) has been confirmed to be at redshift 11.4 (when the universe was 390 million years old), while the second candidate was discovered to actually be at a lower redshift of 4.9 (when the universe was 1.2 billion years old).

References

Galaxies discovered in 2022 Boötes Galaxies Discoveries by the James Webb Space Telescope {{galaxy-stub

Background

See also

References