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27/9/2017 - New Horizons Discoveries Keep Coming
New Horizons is on its way to new discoveries deep in the Kuiper Belt – a region inhabited by ancient remnants from the dawn of the solar system.

Categories: (   Kuiper Belt   )

22/9/2015 - Total Eclipse of the Harvest Moon
In the days before light bulbs, farmers relied on moonlight to help them harvest their crops. Many crops ripen all at once in late summer and early autumn so farmers found themselves extremely busy at this time of year. They had to work after sundown. Moonlight became an essential part of farming, and thus, the Harvest Moon was born.

Categories: (   Moon - Earth - Eclipse   Moon - Earth - Harvest   )
(Ref:2015-09-b.dai )  

18/9/2015 - NASA Spacecraft takes GPS to New Heights
As any backcountry hiker knows, Global Positioning System, or GPS, trackers are crucial for navigation. But they can also be a little finicky. Units sometimes lose lock when you walk into the shadow of a canyon wall, when you point the units at the ground, or even when you make a sharp turn. Now imagine a GPS system flying through the vacuum of space at 22,000 mph, rapidly spinning 43,000 miles above the surface of the blue planet below. Would it work?

Categories: (   Gps   Magnetic Reconnection   )
(Ref:2015-09-a.dai )  

28/8/2015 - The Hidden Meltdown of Greenland
More than 90 percent of our planet’s freshwater ice is bound in the massive ice sheets and glaciers of the Antarctic and Greenland. As temperatures around the world slowly climb, melt waters from these vast stores of ice add to rising sea levels.

Categories: (   Ice   )
(Ref:2015-08-b.dai )  

11/8/2015 - A Good Year for Perseid Meteors
Moonlight is ethereal, enchanting, romantic. For many sky watchers, nothing beats the luminous beauty of a full Moon. It’s great …. except during a meteor shower. When Earth passes through a stream of comet dust, all that romantic moonlight turns into a nuisance, overwhelming the fainter display of shooting stars.

Categories: (   Meteors   )
(Ref:2015-08-a.dai )  

27/7/2015 - Summer Blue Moon
When someone says "Once in a Blue Moon," you know what they mean: Rare, seldom, even absurd. This year it means "the end of July."

Categories: (   Planet - Earth - Moon - Blue   Moon - Earth   )
(Ref:2015-07-c.dai )  

22/7/2015 - Predicting Floods
In the pantheon of natural disasters, floods are among the worst. By any metric—from financial ruin to human toll—floods rank alongside earthquakes, hurricanes, and tsunamis. In fact, the most deadly disaster of the 20th century was the China floods of 1931, which may have resulted in more than a million deaths.

Categories: (   Earth - Climate   Earth - Weather   )
(Ref:2015-07-b.dai )  

10/7/2015 - Space Coffee
Astronauts on the International Space Station give up many pleasures to take those giant leaps in the name of science. They leave behind fresh vegetables, relaxing hot showers, warm sunshine, gently misting rain, and much more.

Categories: (   Food   )
(Ref:2015-07-a.dai )  

26/6/2015 - Handprints on Hubble
It's funny, the things you notice hanging upside down in space.

Categories: (   Handprints   )
(Ref:2015-06-b.dai )  

26/6/2015 - The Good, the Bad, and the Algae
Algae are complicated. The little plants can be both good and bad. Single-celled algae called phytoplankton are a main source of food for fish and other aquatic life, and account for half of the photosynthetic activity on Earth—that’s good. But certain varieties such as some cyanobacteria produce toxins that can harm humans, fish, and other animals.

Categories: (   Algae   Food   )
(Ref:2015-06-c.dai )  

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