Moon dirt smells.
A big question facing the NASA team planning the Apollo 11 moon landing was what would the moon’s surface be like—would the lander’s legs touch down on firm ground, or sink into something soft? The surface turned out to be solid, but the real surprise was that the moon had a smell.
Moon soil is extremely clingy and hard to brush off, so when Armstrong and Aldrin returned to the lunar module and repressurized it, lunar dirt that had clung to the men’s suits entered the cabin and began to emit an odor. The astronauts reported that it had a burned smell like wet fireplace ashes, or like the air after a fireworks show.
Scientists would never get the chance to investigate just what the crew was smelling. While moon soil and rock samples were sent to labs in sealed containers, once they were opened back on Earth, the smell was gone. Somehow, as Charles Fishman, author of One Giant Leap, says, “The smell of the moon remained on the moon.”
A big question facing the NASA team planning the Apollo 11 moon landing was what would the moon’s surface be like—would the lander’s legs touch down on firm ground, or sink into something soft? The surface turned out to be solid, but the real surprise was that the moon had a smell.
Moon soil is extremely clingy and hard to brush off, so when Armstrong and Aldrin returned to the lunar module and repressurized it, lunar dirt that had clung to the men’s suits entered the cabin and began to emit an odor. The astronauts reported that it had a burned smell like wet fireplace ashes, or like the air after a fireworks show.
Scientists would never get the chance to investigate just what the crew was smelling. While moon soil and rock samples were sent to labs in sealed containers, once they were opened back on Earth, the smell was gone. Somehow, as Charles Fishman, author of One Giant Leap, says, “The smell of the moon remained on the moon.”
Trojan asteroid
Trojan asteroid, also called Trojan planet, any one of a number of asteroids that occupy a stable Lagrangian point in a planet’s orbit around the Sun.
The Trojan asteroids move in the same orbit as Jupiter, though they keep either well ahead of or well behind the Giant Planet and are in no danger of being engulfed. Mars has several Trojans, and Neptune one. No true Earth Trojans are known,
Trojan asteroid, also called Trojan planet, any one of a number of asteroids that occupy a stable Lagrangian point in a planet’s orbit around the Sun.
The Trojan asteroids move in the same orbit as Jupiter, though they keep either well ahead of or well behind the Giant Planet and are in no danger of being engulfed. Mars has several Trojans, and Neptune one. No true Earth Trojans are known,
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Hey my Friends , many of you joined me in my Live stream . In which I was trying something new but things didn't work as I expected. But I am happy you joined me .
May be all you are curious to talk , discuss and share knowledge with each - other. So , Yes , We will be able to talk each -other in coming days.
But for now , you have to wait , I am making rules and laws for livestream . what will we discuss in our livestream ? who and how will we decide the topic? What should be the timing? how many participants allows to talk at one time? There is many things to figure out.
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Life at the Lab: Astronaut Emergency Exit
Why Architects Built This Road Bridge Circular Instead Of Straight?
The Laguna Garzón Bridge , located in Uruguay, is a bridge famous for its unusual circular shape.
On the bridge’s unusual circular design, its architect Rafael Viñoly has a perfectly logical and functional explanation: the curved design will force drivers to slow down the speed of their cars while also prove an opportunity to enjoy the panoramic views of this amazing landscape. The circular shape splits the lines into two semicircles and it is one of the smartest methods to prevent speeding accidents. The bridge deters dangerous speeding by adding curves to a mile-long straightway road.
The Laguna Garzón Bridge , located in Uruguay, is a bridge famous for its unusual circular shape.
On the bridge’s unusual circular design, its architect Rafael Viñoly has a perfectly logical and functional explanation: the curved design will force drivers to slow down the speed of their cars while also prove an opportunity to enjoy the panoramic views of this amazing landscape. The circular shape splits the lines into two semicircles and it is one of the smartest methods to prevent speeding accidents. The bridge deters dangerous speeding by adding curves to a mile-long straightway road.
Once upon a time the speed of light was infinite but some Astronomers made it finite .
why ice float on water ? (albeit Solid sink in liquid because solid has more density than liquid.)
Ice floats because it is less dense than water. Water has a density of 1.0 gm/cubic cm. The density of ice is 0.931 gm/cubic cm. The hydrogen bonds that form when water freezes into ice allow the molecules to be spaced farther apart, making them take more space, decreasing the overall density and making it float in the water.
#2
When water freezes into its solid form, its molecules are able to form more stable hydrogen bonds locking them into positions. Because the molecules are not moving, they're not able to form as many hydrogen bonds with other water molecules. This leads to ice water molecules not being as close together as in the case of liquid water, thus reducing its density.
Ice floats because it is less dense than water. Water has a density of 1.0 gm/cubic cm. The density of ice is 0.931 gm/cubic cm. The hydrogen bonds that form when water freezes into ice allow the molecules to be spaced farther apart, making them take more space, decreasing the overall density and making it float in the water.
#2
When water freezes into its solid form, its molecules are able to form more stable hydrogen bonds locking them into positions. Because the molecules are not moving, they're not able to form as many hydrogen bonds with other water molecules. This leads to ice water molecules not being as close together as in the case of liquid water, thus reducing its density.
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