This month, #SpaceDrafts is with Dr. Rachael Livermore (UT-Austin):
Fun with Gravitational Lensing! The First Galaxies Unveiled with Einstein’s Telescopes
Pandora’s Cluster – Abell 2744. Most of the mass – 75% of it – isn’t in the form of the visible light you see, but is contained in the mysterious dark matter, whose nature we still do not understand.
But we can measure it’s effect.
The ghostly arcs and thin lines aren’t image compression artifacts. These are distant galaxies, behind the cluster. Their shapes are sheared, distorted and magnified as light from them travels through the space, curved by the enormous mass of the cluster. Join Rachael for a tour through the Frontier Fields using the Hubble Space Telescope, and find out how she uses gravitational lensing to learn what happened a long time ago, in a galaxy far, far away!
Answer her tricky questions for a shot at cool prizes – we’ll have telescopes setup outside at sunset if it is clear!
Wednesday, January 27, 7.00pm (Stargazing starts at Sunset)
Please. Thank you!
As always, Space Drafts is FREE and open to all ages! Bring your four-legged friends too!