In a step forward for NASA’s Asteroid Redirect Mission, the agency has opted to retrieve a boulder from a larger asteroid.
NASA’s MAVEN spacecraft has detected dust high in Mars’s atmosphere and auroras across the planet’s northern hemisphere.
Observe International Earth Hour this Saturday by turning off your lights at 8:30 p.m. local time, then heading outside to see the waxing gibbous Moon and Jupiter amidst the evening stars. And on Friday, a barely-there total lunar eclipse awaits.
The brightest nova since 2013 peaked and dimmed, but now its behavior is unsettled. It’s an easy catch in binoculars before dawn, a bit higher every morning.
You might be tempted to pass up this familiar star for more exotic quarry, but take another look at a multiple star with a most interesting history.
With risky prospects on far-northern islands and at a premium aboard aircraft, observers looked on with awe as the Moon’s shadow swept across the Arctic Ocean.