The illusion of the local dome
Measuring the cosmic gap
Our actual backyard neighbors
The local bubble and beyond
YOUR GOAL
Master of Mapping our local cosmic neighborhood
007skaty Measuring the Cosmic Gap
Pinging the Moon, pinging the Moon, A green laser flash takes two seconds to bounce!
007skaty Detecting angles of 10 microarcseconds from the L2 point, Gaia creates the most detailed 3D map of our
Stellar parallax: The shift of the nearest star is so tiny it is like spotting a quarter from 5,000 kilometers away!
How small of an angle can the Gaia space telescope measure to calculate stellar distances?
What baseline do astronomers use on Earth to get the largest possible parallax shift for distant stars?
What astronomical method uses the apparent shift of a star to calculate its distance?
Which European Space Agency satellite is currently mapping the 3D positions of over one billion stars?
If we look at the Sun right now, how long ago did the light we see actually leave its surface?