Asteroidul din Apocalipsa capitolul 8

 

Apophis a near-Earth asteroid nicknamed "The Destroyer" is coming!

 

Quote ---NASA is drawing up a shortlist of ideas to be unveiled early next year for diverting a 40m-ton asteroid that is on course to pass dangerously close to Earth.

The schemes will be presented and discussed at the annual meeting of the American Association for the Advancement of Science.

Fears that the planet may be in danger from asteroids were heightened by the discovery of one orbiting the sun that, on its present path, will pass within 22,000 miles — a hair’s breadth in astronomical terms — in April 2029.

Nasa’s idea is to engineer a minor shift in its trajectory that would make the asteroid miss Earth by a wider margin on this and all subsequent passes. Under one possible plan, a robotic craft would be sent to the asteroid to attempt to alter its course. One option might be to install a propulsion system on the surface to nudge it onto a new course.

The studies follow the discovery of hundreds of small asteroids orbiting the sun that repeatedly cross Earth’s orbit, raising the possibility of a devastating collision. The one causing most concern is a rock of more than 1,000ft called Apophis, the Greek name for the Egyptian god Apep, known as “the Destroyer”. It will come so close that it will pass under many satellites and may destroy some.

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Quick, get Bruce Willis and Ben Afleck on the phone! And Robert Duval too. Maybe if we sacrfice them to the gods, they will be appeased and spare our wretched planet.

Shade:

22.000 miles. That's close. Should make for a nice spectacle in the sky if it passes at night, if nothing else when it starts clearing out any satellites that get in its way. Definitely gonna grab a telescope and camp out in some dark place for the night if it passes at the right time and is above the horizon :)

Unknown Target:

For comparison: the Earth's average distance from the Moon is 385,000 kilometers, or 239,227.909 miles (all hail Google!). That asteroid will be super close.

Ghost:

Holy ****. Solution: "The use of nuclear weapons is now authorized." -William Adama

 

 

Seriously, though. Jesus. That's kinda scary. I vote instead of altering the asteroid's course, we slow down Earth's orbit. =D

Shade:

 

--- Quote ---That asteroid will be super close.

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Yep. Geosynchronous orbit is about 35.700km, so it's actually right about there unless my conversions are off. Which should get interesting, I bet there will be more than a few geo-sync satellite operators biting their nails while that thing flies by.

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Apophis is the name of a near-Earth asteroid, which might have a close encounter with earth in 2029. Apophis Asteroid would pass through a gravitational keyhole, which is about half a mile wide, which would attracts the asteroid closer to earth and set us up for an impact on April 13, 2036. Apophis broke the record for the highest level on the Torino Scale, by being placed at a level 4 for only a short time.

Comets vs. Asteroids

The biggest known comet is 70 km large. Even if you add 50% it is still tiny compared to asteroids. Comets cause trouble by their extremely high speed, but they are also extremely fragile. Most of them will burn up during the entry into the atmosphere of Earth. The damages from comets would be rather like that:

1.   The direct damage by the fireball

2.   The radiation damage by the fireball (fireball is hot, and hot things emit thermal radiation)

3.   The ejecta (like shrapnel) of the impact, reaching you at supersonic speed. Imagine a wave of hot stones rolling over you and traveling up to once around the world.

4.   The seismic shockwaves = Earthquake. Travel at the speed of sound inside Earth, and takes a moment.

5.   The air blast which travels at the speed of sound. Once you hear the impact, its other effects would have already reached you.

Apophis Asteroid is approximately 1,066 ft. (325 meters). Being a near-Earth object (NEO) means it is an object whose orbit brings it into proximity with the Earth. All NEOs have a closest approach to the Sun (perihelion) of less than 1.3 AU. They include a few thousand near-Earth asteroids (NEAs), near-Earth comets, a number of solar-orbiting spacecraft, and meteoroids large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the planet. NEOs have become of increased interest since the 1980s because of increased awareness of the potential danger some of the asteroids or comets pose to the Earth, and active mitigations are being researched.