Cameras outside the International Space Station captured views of Tropical Storm Laura from approximately 250 miles above. The space station passed directly over the tropical system on Sunday, August 23, prior to the storm making landfall on Cuba. The National Hurricane Center is projecting Laura to strengthen into a hurricane once in the Gulf of Mexico, with landfall expected on the U.S. Gulf Coast later this week. Follow our coverage: https://blogs.nasa.gov/hurricanes.
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The Islamic Conquest of Syria – by al-Waqidi
Byzantium and the Arabs in the Sixth Century – by Irfan Shahid
Yarmuk 636 AD: The Muslim Conquest of Syria – by David Nicolle
Forgotten Islamic History – by Naeem Ali
The Great Islamic Conquests 632 – 750 – by David Nicolle
Khalid Bin Al-Waleed (The Sword Of Allah) – by Abdul Basit Ahmad
The Byzantine Wars – by John Haldon
Byzantium and the Early Islamic Conquests – by Walter E. Kaegi
The Early Islamic Conquests – by Fred McGraw Donner
Decline and fall of the Sassanian Empire – by Parvaneh Pourshariati
Cameras outside the International Space Station captured views at 11:27 a.m. EDT on Sept. 2 of Hurricane Dorian from 260 miles in altitude as it churned over northwestern Bahamas. In its 11:00 a.m. EDT advisory, the National Hurricane Center said Dorian was almost stationary, moving toward the west at just 1 mile an hour just over 100 miles east of West Palm Beach, Florida, packing catastrophic sustained winds of 155 miles an hour. A slow westward to west-northwestward motion is forecast during the next day or so, followed by a gradual turn toward the northwest and north. On this track, the core of extremely dangerous Hurricane Dorian will continue to pound Grand Bahama Island through much of today and tonight. The hurricane will move dangerously close to the east coast of Florida tonight through Wednesday evening and dangerously close to the Georgia and South Carolina coasts Wednesday night and Thursday. Currently, Dorian is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Although gradual weakening is forecast, Dorian is expected to remain a powerful hurricane during the next couple of days while moving on a possible track up the southeastern U.S. seaboard.
Cameras outside the International Space Station captured views September 1 of Hurricane Dorian from 260 miles in altitude at 12:16 p.m. Eastern time as it churned over the Atlantic Ocean over the northern Bahamas. The storm, which is moving in a westerly direction with sustained winds of 180 miles an hour, is a dangerous Category 5 hurricane, carrying the strongest winds in recorded history for the northwestern Bahamas. The National Hurricane Center said in its 11 a.m. EDT advisory that Dorian is inflicting catastrophic damage to the Abacos and Grand Bahama Islands. Dorian is forecast to approach the east coast of Florida before taking a possible track up the southeastern U.S. seaboard later this week.
Cameras outside the International Space Station captured views August 30 of rapidly intensifying Hurricane Dorian at 12:18 p.m. Eastern time as it churned over the Atlantic Ocean. The storm, which is moving to the northwest, is forecast by the National Hurricane Center to approach the east coast of Florida Monday evening as a likely category 4 hurricane.
The Coriolis effect says that anytime you’re rotating—whether it’s on a playground toy or your home planet—objects moving in straight lines will appear to curve. This bizarre phenomenon affects many things, from the paths of missiles to the formation of hurricanes.
You may have heard that the Coriolis effect makes water in the bathtub spiral down the drain in a certain way, or that it determines the way that a toilet flushes. That’s actually wrong.
Although, as you may have noticed while tracking a hurricane on the news, storms in the Northern Hemisphere spin counterclockwise, while those in the Southern Hemisphere spin clockwise. Why do storms spin in different directions depending on their location? And why do they spin in the first place? The answer is the Coriolis effect.
We worked with our partner agencies to use space-based assets to capture imagery of Hurricane Harvey that impacted the Texas-Louisiana Gulf Coast region. Imagery captured from the vantage point of space, provides data that weather forecasters, emergency responders and other officials can use to better inform the public. Views from the International Space Station, and NOAA’s GOES East satellite showed the massive size and movement of the storm. While our Global Precipitation Measurement (GPM) Mission analyzed the storm’s record-breaking rainfall – which led to catastrophic flooding in Texas and Louisiana. Due to the storm, our Johnson Space Center in Houston is closed through Labor Day, while the region recovers, but Mission Control remains operational in support of the crew aboard the International Space Station. Also, Final RS-25 Engine Test of the Summer, Key SLS Rocket Hardware Finished, and Researching Quiet Supersonic Flight!
