In 2029, asteroid Apophis will skim safely past Earth, where it will be visible to billions. For scientists, it's a once-in-a-millennium planetary experiment.
When the potentially hazardous asteroid 99942 Apophis makes its breathtakingly close flyby of Earth on April 13, 2029, more than 2 billion people across Africa and Western Europe will be able to watch it drift across the night sky. Under clear skies,... [5581 chars]