This week we wonder if the Universe is going to collapse and then expand again, how satellites can have such different velocities, and the size of the observable Universe.
Our universe is 13.8 billion years old,. How do astronomers arrive at such an enormous number? more with Sabrina @qdteinstein @quickdirtytips at #365daysOfAstro
What is chaos theory? How can something be both deterministic and unpredictable?
What’s the deal with redshift? How can we actually interpret velocities when it comes to cosmic expansion?
Book Review: “Universal: A Guide to the Cosmos” by Brian Cox & Jeff Foreshaw
It turns out that the universe is kind of big. If the universe is important are we immortal? Did life happen on Venus and Mars?
What is the “cosmic calendar”? What are some important scales in the universe?
An unwelcome dearth of solar system objects with Jupiter, Mars and Saturn low on the horizon, but dwarf planet Ceres is at opposition and we also have a few nice conjunctions to enjoy in May.
What’s the difference between the universe and the multiverse? Do we live in the multiverse? @PaulMattSutter at #365DaysOfAstro