What is Dark Matter?

Risa Wechsler, astrophysicist explains: 85% of the matter in the universe is dark matter, a substance that interacts through gravity but doesn't emit light. American astronomer Vera Rubin observed that stars on the outer edges of galaxies were rotating faster than anticipated, leading her to deduce the existence of substantial amounts of invisible dark matter. The Rubin Observatory will enhance our understanding by mapping 20 billion galaxies across half the sky using gravitational lensing to pinpoint all matter, visible or not. Additionally, it will explore tiny galaxies with few stars but massive dark matter clumps, providing insights into dark matter's properties. This comprehensive survey will potentially reveal clues about dark matter's particle and further elucidate the universe's structure and evolution.

Video is produced by SLAC National Accelerator Laboratory where the LSST camera is built.

Written, edited and produced by Olivier Bonin.

Musicbed: MB01DVMPHMMW12R

#SLACExplains #RubinObservatory #capturethecosmos #Astronomy #DarkMatter #DarkEnergy

[MeissnerEffect]

Vera’s great works recognised with distinction. Ms Rubin’s giant shoulders we have to stand on. 🦋✨🙌

[tedbohne]

sounds like the WAG "wild assed guess" method to