Asteroids’ orbits around the sun may put them in collision paths with inner planets. We may have had a near-miss, but asteroids can pass by the Earth undetected.
- Professor of Astronomy, Mathematics, and Physics, Athabasca University
The sun’s magnetic activity causes auroras, and the relationship between solar flares and auroras reveals an 11-year cycle; we’re experiencing a particularly busy one right now.
One hundred years ago, one star changed our view of the universe, proving that the Andromeda “nebula” was a galaxy like our Milky Way.
La couronne solaire sera visible lors de l’éclipse solaire du 8 avril. Les astronomes tentent encore de percer les mystères de cette couronne, notamment de comprendre pourquoi elle est si chaude.
Observations during historical solar eclipses confirmed Einstein’s theory of gravity, and led to the predictions of black holes.
The solar corona can be seen during the solar eclipse on April 8. Astronomers are still trying to figure out the mysteries of the corona, including why it’s so hot.
The sun is expected to reach its solar maximum in 2025. Recent auroras suggest that the maximum may be bigger than predicted.
It has only been in the past century that weather prediction on Earth has advanced enough to work two weeks in advance. Predicting space weather, however, is only reliable an hour in advance.
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