Where is the center of the universe?
As the universe expands, it feels like it must be spreading out from some initial point. But a physicist explains why that’s not how it works. Hint: space-time is involved.
June 10, 2025 • ~8 min
As the universe expands, it feels like it must be spreading out from some initial point. But a physicist explains why that’s not how it works. Hint: space-time is involved.
In the 19th century, astronomers could see Mars through telescopes, but not clearly. Some used their imaginations to fill in what the blurry images couldn’t convey.
The Vera C. Rubin Observatory will capture enough detail to see a golf ball from 25km away.
Under the proposed budget, several major projects, such as the Mars Sample Return and the Space Launch System, would face cancellation.
As NASA rolls out more powerful telescopes in the future, scientists will need a way to determine where to point them. A new approach could help.
NASA hasn’t landed humans on Mars yet. But thanks to robotic missions, scientists now know more about the planet’s surface than they did when the movie was released.
/
133