Astronomy › Section U · Evolution and distribution of galaxies › Topic U.1
Observations of distant galaxies
Light from remote galaxies set out billions of years ago, so a deep image of the sky is a record of cosmic history. By comparing galaxies seen at different look-back times, astronomers piece together how galaxies were born and how they grew.
In this topic
- A cosmic time machine
- From redshift to look-back time
- Worked example: a galaxy at redshift 2
- Colours and shapes as clues
- Stars formed early
- Deep fields and natural telescopes
- Young galaxies looked different
- Cosmic noon
- JWST and cosmic dawn
- Worked example: light from MoM-z14
- Common mistakes to avoid
- Key takeaways
This topic is part of Wuanberri Pro. Checking your access…