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Asteroid defense
We can observe an asteroid by observing them through a radar. The radar can reveal its size, shape, and whether it is two objects.
In the unlikely event that an asteroid is deemed a threat, NASA has inventions to effectively diffuse them such as:
- Kinetic Impactor - a spacecraft that slams into the asteroid to move it's orbit; and
- Gravity Tractor - a spacecraft that remains near the asteroid until it has its own gravity to gradually alter its path
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- In 1801, Giuseppe Piazzi discovered the first and largest asteroid, Ceres, orbiting between Mars and Jupiter (Today it is classified as both an asteroid and a dwarf planet)
- In 1802, William...
- Asteroids are rocks which revolve around the sun. They are usually too small to be considered as a planet since they can be as small as 2 meters but they can be as big as 940 kilometers across.
- Asteroids are also known as planetoids or minor planets
Amusingly, the collisions that could possibly bring death to us may be the reason we are alive today.
When Earth was formed it was unable to support growth and desolate. Asteroid and comet collisions may have delivered the water-ice and other carbon-based molecules that al...
- 1991 - NASA's Galileo was able to take close-up images of asteroids
- 1994 - Discovered the first moon to orbit an asteroid
- 2001 - Landed a spacecrafts successfully on Near-Earth Asteroid Eros
- 2006
- If an asteroid crashes through Earth's surface, it is then called a meteorite.
- For an asteroid to cause a global panic it has to be more than a quarter-mile wide, an impact from an asteroid this size would cause dust to raise into the atmosphere and thus creating a "nuclea...
Asteroids are what's left after the formation of our solar system from billions of years ago.
It is believed that the reason why they were formed were because of the birth of Jupiter. Its birth hindered any planetary bodies to form in the space between Mars and Jupiter, wh...
The different types of asteroids are:
- Main belt asteroids - Lies in between Mars and Jupiter; holds more than 200 asteroids
- Trojan asteroids - found outside the main belt; usually orbits larger planets
- Near-Earth asteroids (...
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Ocean water is full of mineral salts which enter through the rivers, passing through rock and soil. Water has a property of evaporation whereas salt does not, so a lot of salt is left behind.
Oceans are saline throughout the world, but the Mediterranean Sea is saltier. Man...
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- Spring is when seeds and roots start to grow. It is often wetter and warmer but not as hot when summer comes.
- Summer is the time when the temperature has the ability to reach its hottest and when forest fires are more frequent.
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Whenever someone yawns near you, you may find it near impossible not to yawn.
New studies found the reason we battle to stop a yawn appears to reside in the brain area that's responsible for motor function. The urge to yawn when you see someone else doing it is known as echophenome...
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