Weather permitting, almost everyone in North America will be able to see the partial solar eclipse this Thursday. Here’s more info, including when to see the eclipse where you live
Hurtling through space at about 35 miles (56 kilometers) per second, Comet Siding Spring (C/2013 A1) swept closest to Mars on October 19, 2014. It swept extremely close to the planet, closer than any known comet in recorded history. We’re just beginning to see the photos from this event. See the best ones here …
The most destructive tsunami in Hawaii’s recent history took place in 1946. Scientists now have evidence, however, suggesting that at least one colossal tsunami, some three times larger than the 1946 tsunami and larger than any in Hawaii’s known history, struck the islands in the past. These scientists say a similar mammoth tsunami could strike again …
Vast unexplored areas of the ocean have now been mapped with new satellite data and scientists have discovered thousands of previously uncharted seamounts in addition to an extinct spreading ridge in the Gulf of Mexico.
Few regions on Earth depend as heavily on glaciers for food, energy and water as South Asia’s Hindu Kush Himalayan ecosystem. But now hundreds of millions in South Asia are at risk from glacier melt. A new research paper in the journal Environmental Science and Policy highlights some of the challenges downstream communities face when glacier water from upstream communities becomes scarce.
The familiar primary and secondary rainbows have been known since there were eyes. The long sought 3rd and 4th order rainbows were finally imaged in 2011. Now we have the 5th order!
Tonight … October 20, 2014 … is the best time for watching the annual Orionid meteor shower. And an awesome shower it is! For one thing, it stems from debris from the most famous of all comets, Comet Halley. In fact, the object in the picture at top isn’t a meteor. It’s Comet Halley itself. Debris in the orbit of this comet – the Orionid meteor stream – is now encountering Earth’s atmosphere. The meteors will become visible in their greatest numbers tonight, and especially in the dark hours before dawn tomorrow morning (October 21). At the peak, from a dark site, you might expect to see about 25 meteors per hour.
Details on 2014’s Orionid meteor shower. It’ll peak on the morning of October 21. If you’re hankering to watch some meteors, try this shower! 2014 is a good year for them.
The close pass of Comet Siding Spring to Mars was exciting! Closest approach was October 19. Watch for more photos from the event – both from earthly observers and from the spacecraft orbiting Mars and on Mars’ surface – here at EarthSky.org.