Instead of reaching Apophis after its close flyby of Earth, they could get there months beforehand. This would allow us to map Apophis in its pristine state, before Earth’s gravity potentially ...

The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking Earth eight years from now.

When Apophis was first spotted two decades ago, it initially carried a 2.7% chance of impacting Earth during its 2029 flyby – then a record. While YR4's impact odds have unseated Apophis ...

The risk of Apophis impacting Earth during its 2029 flyby even rose as high as 2.7% on the Sentry Impact Risk Table. In the case of Apophis, further observations eventually allowed astronomers ...