Japanese researchers at the Mauna Kea Observatory recently observed a mysterious swirl of light in the sky. And amateur astronomers can use binoculars this week to follow a comet that last flew by Earth 50,000 years ago.
Japanese researchers at the Mauna Kea Observatory recently observed a mysterious swirl of light in the sky. And amateur astronomers can use binoculars this week to follow a comet that last flew by Earth 50,000 years ago.