Enjoying EarthSky? Subscribe.

173,470 subscribers and counting ...

Posts by EarthSky

Science Wire | Sep 04, 2015

Giant sea scorpion was ancient sea predator

Scientists have discovered a person-sized sea scorpion that lived 467 million years ago.

Image credit:  NASA/Ames
Blogs | This Date in Science | Sep 01, 2015

This date in science: Pioneer 11 swept past Saturn

Pioneer 11 was the first spacecraft ever to encounter Saturn. It paved the way for the even-more-sophisticated Voyager and Cassini spacecraft.

Image Credit: Wikipedia
FAQs | Sep 01, 2015

What’s the birthstone for September?

September’s birthstone, the sapphire, was said to represent the purity of the soul.

This map of ocean surface temperatures shows how warm waters in the North Atlantic fueled Hurricane Katrina. NASA and UCI researchers have found that the same conditions heighten fire risk in the Amazon basin. Image credit: Scientific Visualization Studio, NASA’s Goddard Space Flight Center
Science Wire | Aug 31, 2015

Linked: Amazon wildfires, Atlantic hurricanes

Years of data on storms and sea surface temps show a correlation between a warm North Atlantic Ocean – more destructive hurricanes – and a fire-prone Amazon.

Photo by John Foster, Oregon Parks and Rec
Science Wire | Aug 30, 2015

Astronomy events, star parties, festivals, workshops

Let an amateur astronomer point out stars and constellations. This list of events and links to clubs can help you get started.

This spider from the genus Selenops is about two inches across and hunts in the tree canopy at night for its prey.Photo credit: Stephen Yanoviak / University of Kentucky.
Science Wire | Aug 28, 2015

Skydiving spider discovered in South America

Biologists have discovered a nocturnal hunting spider that can steer while falling. Watch it glide!

Screen Shot 2015-08-28 at 8.20.24 AM
Science Wire | Aug 28, 2015

Got a minute? Climate change/sea level rise

How is climate change connected to sea level rise? One-minute video explains.

Photo credit: NOAA
Science Wire | Aug 28, 2015

Want to see Earth’s super predator? Look in the mirror.

Our efficient killing technologies have given rise to the human super predator. Our impacts are as extreme as our behavior, says study.

Tonight | Aug 26, 2015

Orion the Hunter and Sirius the Dog Star

You’ll always know it’s the sky’s brightest star, Sirius, if the very noticeable constellation Orion the Hunter is nearby.

On August 21, 2015 the Aqua satellite captured this image of the smoke from the fires on the west coast of the United States wafting eastward on the jet stream.  In this image the smoke is obscuring parts of Montana, North and South Dakota, Minnesota, and Wisconsin.  Residents of these states are on notice that sunsets will be much redder and more orange as long as the smoke lingers over their area. The reason? The size of the smoke particles is just right for filtering out other colors meaning that red, pink and orange colors can be seen more vividly in the sky. Image credit: Jeff Schmaltz, MODIS Rapid Response Team.
Science Wire | Aug 25, 2015

No end in sight for western US wildfires

Satellite images capture the ongoing onslaught of wildfires in the U.S. West.