skylark: Venus, Mars, and Mercury, photographed by STEREO A, May 2012.
Venus, very bright, moves right to left. Behind it, Mars appears to move more slowly in the same direction. At bottom right, Mercury moves left to right.
34 images, one every 5 hours 3rd-9th May.
Image credit: NASA/STEREO. Animation: AgeOfDestruction.
One of the answers to the topic: Visually stunning math concepts which are easy to explain at Mathematics Stack Exchange.
I think if you look at this animation and think about it long enough, you’ll understand:
- Why circles and right-angle triangles and angles are all related
- Why sine is opposite over hypotenuse and so on
- Why cosine is simply sine but offset by pi/2 radians
Look at the size of these trees!
These are coast redwoods (Sequoia sempervirens) in Humboldt Redwoods State Park, California. The park is home to the largest continuous block of old-growth redwood forest left on the planet- with some 10,000 acres.
The alluvial flats along its creeks and rivers are prime redwood habitats. The mix of rich soils, water, and fog rolling in from the ocean have produced the planet’s tallest forest. Of the 180 known redwoods greater than 350 feet, more than 130 grow here.
Coastal redwoods can be up to 379 feet (115.5 m) in height (without the roots) and up to 26 feet (7.9 m) in diameter at breast height.
Research now shows that the older such trees get, the more wood they put on- nice to see even trees go through a midlife spread!
Photograph by Michael Nichols, National Geographic
“I really wanted to treat the icebergs as structural objects and to focus on just three elements: the sea, the iceberg, and the sky,” — Simon Harsent
(via Simon Harsent photographs icebergs in Greenland and Newfoundland in his book Melt: Portrait of an Iceberg.)