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Posts by
Editors of EarthSky
How can some fish change from female to male?
Parrotfish an anemonefish can live for a while as male fish or female - but different hormones kick in and cause it to change.
September 15, 2009
Is red Antares bigger than our sun?
The ancients saw red Antares as the ruby Heart of the Scorpion in the constellation Scorpius. This star has since ballooned in size.
September 15, 2009
John Goff describes how Hurricane Ike eroded Gulf Coast islands
John Goff said the most erosion from hurricane Ike occurred when the hurricane subsided, as water rushed out of an overflowing Galveston Bay, back into the Gulf of Mexico.
September 14, 2009
Jean Bahr on arsenic in drinking water
Jean Bahr suggests that water drawn from private wells be tested for arsenic and other potential toxic substances, even in the U.S.
September 14, 2009
Could you drive fast enough to keep a sunset in view?
Is it possible to see an endless sunset? The answer depends on the speed of Earth's rotation and your precise location on the globe.
September 13, 2009
What causes the hiccups?
You might get hiccups if you laugh too hard, or eat spicy food, or if your stomach becomes bloated. And everyone has a favorite hiccup remedy.
September 9, 2009
Stars, how big can they get?
The theoretical size limit for the biggest stars keeps going up! We know of stars between between 60 and 100 times as massive as our sun.
September 9, 2009
Reflective crops may curb global warming
How leaves are arranged in the canopy can make a big difference as to how much sunlight is reflected back from the reflective crops.
September 7, 2009
EarthSky launches new websites
Both EarthSky websites - in English and Spanish - feature issues important to people in the 21st century, plus leading scientists speaking about solutions.
August 22, 2009
Are jellies taking over?
The news and blogs are full of doom-and-gloom stories of (jellies) jellyfish and stingrays are very thick and taking over the oceans.
August 3, 2009
