A sale of insider shares at $421 a share would make Mr. Musk’s rocket company the most valuable private company in the world, as it readies for a possible initial public offering next year. By Ryan ...

Nov. 13, 2025 Arctic sea ice is disappearing fast, and scientists have turned to an unexpected cosmic clue—space dust—to uncover how ice has changed over tens of thousands of years. By tracking helium ...

Astronomy and planetary science are the study of objects and phenomena that occur beyond the Earth’s atmosphere. This includes investigating stars and their interaction with each other and the ...

Astronomy and astrophysics are the study of objects and phenomena that are found beyond our solar system. This combines theoretical simulations and observation with both terrestrial and ...

The Astrophysical Journal is a peer-reviewed scientific journal covering astronomy and astrophysics. It was founded in 1895 by the American astronomers George Ellery Hale and James Edward Keeler. It ...

Astronomy News. Read the latest astronomy news and articles from around the world. Space and time theory and more. Full-text, images, updated daily.

The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg, and Haudenosaunee peoples. Our main campus is situated on the ...