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Euclid mission reveals “page 1” of our cosmic story
Euclid mission reveals “page 1” of our cosmic story
What are dark matter and dark energy? The large-scale structure of the cosmos encodes them both, with ESA’s Euclid mission leading the way.
Ethan Siegel
Oct 28
Ask Ethan: Why is the Big Bang shown as a tube?
Ask Ethan: Why is the Big Bang shown as a tube?
The most common visual depictions of the history of the Universe show the Big Bang as a growing tube with an “ignition” point. Why is that?
Ethan Siegel
Oct 25
Time: yes, it’s a dimension, but no, it’s not like space
Time: yes, it’s a dimension, but no, it’s not like space
The fabric of spacetime is four-dimensional, with three for space and only one for time. But wow, time sure is different from space!
Ethan Siegel
Oct 24
How NASA’s Europa Clipper helps the hunt for alien life
How NASA’s Europa Clipper helps the hunt for alien life
Could life be widespread throughout the cosmos, in the subsurface oceans of ice-covered worlds? NASA’s Europa Clipper mission investigates.
Ethan Siegel
Oct 23
10 thoughtful insights about the great cosmic unknowns
10 thoughtful insights about the great cosmic unknowns
An in-depth interview with astronomer Kelsey Johnson, whose new book, Into the Unknown, explores what remains unknown about the Universe.
Ethan Siegel
Oct 22
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