How close will Apophis come to Earth in 2029? On 13 April 2029 Apophis will pass as close as 30,600 kilometers (19,000 miles) above the Earth. If you’re superstitious, that's on a Friday the 13th.
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How close will Apophis come to Earth in 2036? On 30 March 2036 Apophis will pass Earth at a much further distance: 8.4 million kilometers (5.2 million miles). That’s more than 20 times the distance between the Earth and Moon.
Will we be able to see Apophis? During the 2029 pass Apophis will be visible from Europe, Africa, and western Asia looking like a somewhat bright star (magnitude 3.1) moving rapidly across the sky. It will be much too far away to be visible without telescopes in 2036.
Could we stop an asteroid like Apophis? With enough warning time before impact, meaning many years, we could change the orbit of an asteroid the size of Apophis enough to cause it to miss the Earth, but this would require a coordinated global effort.
Is anyone planning a mission to Apophis? NASA's OSIRIS-APEX mission will study the asteroid for 18 months starting in April 2029, just before it makes its close approach to Earth. OSIRIS-APEX is the repurposed OSIRIS-REx spacecraft that returned a sample of asteroid Bennu to Earth in September 2023.