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Several people have asked me in recent days what that bright "star" is shining near the sun at dawn. I bet you can guess. Read post here .
A new photo taken by NASA's Mars Reconnaissance Orbiter shows the remarkable landing of the Opportunity lander more than 13 years ago. Read post here .
There we are -- Earth from nearly 900 million miles away. What a view! Read post here .
I don't think anyone expected much aurora Friday night based on the forecast. Maybe a low, green arc at most. But no, the sky put on an incredible show that continues even now into the wee hours of Saturday. Read post here .
Tonight through tomorrow morning, the annual Lyrid meteor shower reaches its peak with 10-20 meteors per hour streaming from near the bright star Vega. Read post here .
NASA scientists just released new global maps of Earth at night, providing the clearest-yet views of the patterns of human settlements across our planet ... and the light we bring to our night skies. Read post here .
Tonight we finally get a chance to see Earth-approaching asteroid 2014 JO25 canter across the sky. These photos, which reveal its peanut-like shape, were taken earlier by radar. Oh, and the sun blasted out a really nice CME! Read post here .
Astronomers are constantly on the lookout for slippery asteroids passing through Earth's neighborhood. Thanks to their efforts, we know of at least 16,000 of them. Of that number about 1,800 are potentially hazardous. One of them, 2014 JO25, will be speeding by our planet Wednesday. Here's how to spot it in a small telescope. Read post here .
Do we have any bread bakers out there? Runners? Tomorrow morning, assuming clear weather, they (and anyone else inclined) will see the waning gibbous moon and Saturn stand together in the southern sky before sunrise. There may be aurora, too. Read post here .
Meet DeeDee. Three times farther than Pluto with a surface temperature of 405° below zero, DeeDee might become our next dwarf planet. Read post here .