Justin Ng captured this beautiful scene last night (July 21, 2014) It’s another of his “impossible” shots – that is, photos that inspire more astrophotographers in light-polluted cities to unveil the beauty of the elusive Milky Way galaxy.
I’m not sure exactly when starfish began insisting on being called “sea stars”, but somewhere along the line they got it into their heads (or central disks perhaps, they don’t have heads per se) that since they are not actually fish, they should no longer be addressed as such. This despite the fact that prairie dogs and sea horses are graciously carrying on with their misleading monikers to spare society the trouble of learning new names.
Yellowstone National Park and the surrounding area is the site of some of the most powerful volcanic eruptions to have ever occurred on Earth. Thanks to new seismic sensors that have been installed in this area over the past decade, scientists now have better tools to visualize what lies beneath the surface. The latest string of research has found that the reservoir of magma – molten or semi-molten rock – under Yellowstone is about 2.5 times bigger than previously thought.
Twilight is the time of day between daylight and darkness, whether after sunset or before sunrise. The sun is below the horizon, but its rays are scattered by Earth’s atmosphere to create twilight’s pinks, purples, and blues.
These photos all came from our Facebook friends. You’ll love them!
The mysterious crater on the Yamal peninsula, discovered by helicopter last week, is not as wide as original aerial estimates suggested. It is now thought to be about 30 meters wide, in contrast to original estimates of up to 100 meters. However, the crater is now known to be up to about 70 meters deep, and it’s seen to have an icy lake at its bottom, with water cascading down its eroding permafrost walls.
Many planets in our solar system have more than one moon. Mars has two moons, Jupiter has 66, Saturn 62, Uranus 27, Neptune 13. But our planet Earth has just one moon. Doesn’t it?
The longest lunar month of the year begins with the new moon of August 25, 2014, and ends with the new moon of September 24, 2014. This lunar month – the period of time between successive new moons – lasts for 29 days 16 hours and 1 minute. That’s 3 hours and 17 minutes longer than the mean lunar month of 29 days 12 hours and 44 minutes.
If you’re an early riser, you might know that the old moon has been back in the east before dawn this week. What to expect in the coming mornings, inside.
The techniques for finding exoplanets – or planets orbiting distant stars – favor the discovery of large planets orbiting close to their stars. That’s why astronomers at the Harvard-Smithsonian Center for Astrophysics (CfA) were pleased to announce today (July 21, 2014) that they’ve found an exoplanet whose “year” lasts 704 days. That is the longest orbit of any exoplanet discovered via transit to date.
You can define twilight simply as the time of day between daylight and darkness, whether that’s after sunset, or before sunrise. Astronomers, surely the experts on nighttime, recognize three kinds of twilight, which are explained in this post.