Recent cosmic collision provides new way to measure universe’s rate of expansion.
ORBITER was in the path of totality for the solar eclipse, and on our way, we were joking about which of us might scream. Turns out, how could you not?
An astronomer explains how and why—and when—eclipses happen, what we can learn from them, and what they would look like if you were standing on the moon.
Lord Martin Rees, a world-leading cosmologist, explains the possibility of multiverse theory. “It’s speculative, it’s exciting science, and it may be true.”
A popular physicist shares why he believes that the deepest nature of reality is hidden from us.