3.2 billion years ago: Asteroid bombardment
Earth is peppered by asteroids, some as big as 60km (40 miles) in diameter –
Explore Ebooks
Categories
Explore Audiobooks
Categories
Explore Magazines
Categories
Earth is peppered by asteroids, some as big as 60km (40 miles) in diameter –
You’re reading a preview, subscribe to read more.
Start your free 30 daysEbook
Terra: Our 100-Million-Year-Old Ecosystem--and the Threats That Now Put It at Risk
byMichael NovacekEbook
Solving the Climate Crisis - A Community Guide to Solving the Biggest Problem On the Planet
byPalmer Owyoung