It’s always shining, always ablaze with light and energy that drive weather, biology and more. In addition to keeping life alive on Earth, the sun also sends out a constant flow of particles called the solar wind, and it occasionally erupts with giant clouds of solar material, called coronal mass ejections, or explosions of X-rays called solar flares. These events can rattle our space environment out to the very edges of our solar system. In space, NASA’s Solar Dynamics Observatory, or SDO, keeps an eye on our nearest star 24/7. SDO captures images of the sun in 10 different wavelengths, each of which helps highlight a different temperature of solar material. In this video, we experience SDO images of the sun in unprecedented detail. Presented in ultra-high definition, the video presents the dance of the ultra-hot material on our life-giving star in extraordinary detail, offering an intimate view of the grand forces of the solar system.
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Article of the Day
  Operation Praying MantisIn April 1988, US naval forces launched Operation Praying Mantis, attacking several Iranian targets in retaliation for the mining of an American warship in the Persian Gulf. The battle, the largest for American surface forces since World War II, was the first surface-to-surface missile engagement in US Navy history. It resulted in the sinking of two Iranian warships and three speedboats and helped pressure Iran into a ceasefire that ended its eight-year war with what neighboring country? More... Discuss |
Article of the Day
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This Day in History
 US President Abraham Lincoln Suspends Habeas Corpus (1861)In law, habeas corpus is a writ ordering that a person be brought before a judge, especially to decide whether a prisoner's detention is lawful. Its suspension means that prisoners can be held indefinitely without being charged. During the US Civil War, President Lincoln suspended habeas corpus to arrest and silence Southern dissenters. A legal battle ensued, and Lincoln prevailed. How was habeas corpus treated in the Confederacy at this time? More... Discuss |
This Day in History
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Today's Birthday
 Ulysses S. Grant (1822)Though he served with bravery in the Mexican-American War, Grant resigned his post several years later, possibly due to his heavy drinking. However, he returned to serve in the US Civil War and won a string of brilliant victories. Three years after Confederate general Robert E. Lee surrendered to him, ending the war, Grant was elected president. Still, he spent his final years in poverty after being swindled by a friend. Days before his death, he did what to secure his family's finances? More... Discuss |
Today's Birthday
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In the News
lenity discuss | |
| Definition: | (noun) Mercifulness as a consequence of being lenient or tolerant. |
| Synonyms: | lenience, mildness |
| Usage: | I promise to show all the lenity in my power; but if the charges brought against this Bonapartist hero prove correct, why, then, you really must give me leave to order his head to be cut off. |
In the News
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Quote of the Day
 Excess on occasion is exhilarating. It prevents moderation from acquiring the deadening effect of a habit.W. Somerset Maugham (1874-1965) Discuss |
Quote of the Day
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