The Spektr-RG telescope, launched successfully into orbit on Saturday, aims to chart the first-ever map of the universe in high-energy X-rays.
Answer by Richard Muller, professor of physics at UC Berkeley, author of Now: The Physics of Time, on Quora. More questions
We often think that people are resistant to change. The truth is that life is ALWAYS changing, no matter what happens. Just like water flowing through a stream, life needs to flow and expand. What happens to water when it is stuck in a puddle? It becomes stagnant and eventually it stinks! The same is true for our lives. We are meant to grow and expand.
I have some upcoming work deadlines and my head kept ruminating about them. If I'm honest with myself, I was unaware of what my mind was doing. I wasn't paying attention. All I knew was that I didn't feel as if the day was fulfilling my expectations of feeling joyful and relaxed.
The plot covers 650 billion cubic light-years and contains 1.2 million galaxies.
World-famous astrophysicist also explains mankind's biggest threats.
As astrophysicist Adam Riess explains in this fascinating Q&A, the cosmos will double in size 800 million years sooner than predicted.