Rotation

 

Astronomy Picture of the Day: Tiny Planet Timelapse

You can pack a lot of sky watching into 30 seconds on this tiny planet. Of course, the full spherical image timelapse video was recorded on planet Earth, from Grande Pines Observatory outside Pinehurst, North Carolina.

Astronomy Picture of the Day: Mount Everest Star Trails

The highest peak on planet Earth is framed in this mountain and night skyscape.

Astronomy Picture of the Day: Rotating Asteroid Bennu from OSIRIS-REx

Could this close-by asteroid ever hit the Earth? Eventually yes -- but probably not for a very long time, even though the asteroid is expected to pass inside the orbit of the Moon next century.

Astronomy Picture of the Day: Saturn's North Polar Hexagon

In full view, the amazing six-sided jet stream known as Saturn's north polar hexagon is shown in this colorful Cassini image.

Astronomy Picture of the Day: Star Trails and the Bracewell Radio Sundial

Sundials use the location of a shadow to measure the Earth's rotation and indicate the time of day.

Astronomy Picture of the Day: Titan: Moon over Saturn

Like Earth's moon, Saturn's largest moon Titan is locked in synchronous rotation.

Astronomy Picture of the Day: Rotation of the Large Magellanic Cloud

This image is not blurry. It shows in clear detail that the largest satellite galaxy to our Milky Way, the Large Cloud of Magellan (LMC), rotates

Astronomy Picture of the Day: The Sun Unleashed: Monster Filament in Ultraviolet

One of the most spectacular solar sights is an explosive flare

Astronomy Picture of the Day: Rotating Moon from LRO

No one, presently, sees the Moon rotate like this. That's because the Earth's moon is tidally locked to the Earth, showing us only one side

Astronomy Picture of the Day: Dual Particle Beams in Herbig-Haro 24

This might look like a double-bladed lightsaber, but these two cosmic jets actually beam outward from a newborn star in a galaxy near you

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