Worried about a potential asteroid strike? You're likely in the clear. NASA has significantly lowered the risk of asteroid 2024 YR4 hitting Earth. Last week, the asteroid had a 3.1% probability of ...

Around 2 billion years ago, an asteroid crashed near present-day Johannesburg, carving out what is now the world’s largest known crater. The impact initially put a dent in Earth’s surface that ...

But Earth’s geologic activity has erased the evidence of impact craters over time, with some help from erosion. Earth’s complex history has elevated its status among its Solar System siblings ...