Author

Mark Burchell

Mark Burchell

Astrophysicist

Recent articles by Mark Burchell

Biggest asteroid threats to Earth. Credit: SciePro / Getty Images

Smash! Earth's impact scars reveal the history of asteroid strikes on our planet. Here are some of the most impressive

Our Moon is covered in craters, yet on Earth there are relatively few. Here's why that is and where you can find evidence of our planet’s violent past

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