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Here’s how and why astronomers plan to aim the Hubble Space Telescope and several ground-based telescopes toward Pluto around the July 12 Earth transit.

Astronomers detected this small asteroid just 8 hours before it struck Earth’s atmosphere over southern Africa on June 2, 2018, producing a terrific explosion. Now researchers report finding its meteorites.

About 5 percent of all UFO sightings cannot be easily explained by weather or human technology. A physicist argues that there’s compelling evidence to justify serious scientific study and that the skeptics should step aside – for the sake of humanity.