U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > General Forums > Science and Technology > Space
 [Register]
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
 
 
Old 05-04-2019, 10:51 PM
 
3,720 posts, read 1,790,696 times
Reputation: 2695

Advertisements

There’s an asteroid out there called 99942 Apophis that’s over 1,000 feet wide, and it’s scheduled to fly by Earth on FRIDAY April 13th, 2029. Will speed past our planet at an estimated distance of around 19,000 miles, potentially coming closer to the surface than some orbiting spacecraft

NASA's Excited About the God of Chaos Asteroid Heading Toward Earth ......

Seems like a kind of prediction of doom possible ....

Will there be only 10-years left for earth as we know it? NASA Excited about what? Will we see it visible? if so as the time gets closer? Will it be a world concern?

Wasn't sure which forum to use .... but seems of a Great Debate and seems as the time gets close ..... we will hear more if real fear is here?

God of Chaos Asteroid Apophis is Headed for Earth

Last edited by elnina; 05-05-2019 at 10:17 AM..
Quick reply to this message

 
Old 05-04-2019, 10:58 PM
Status: "Enjoying life..." (set 11 days ago)
 
Location: San Antonio/Houston/Tricity
39,895 posts, read 57,710,982 times
Reputation: 93765
There is probability of up to 2.7% that it would hit Earth on April 13, 2029.
In fact, the cumulative chance it will hit us in the next century is less than 1 in 100,000. It will cruise harmlessly by Earth, about 19,000 miles (31,000 kilometers) above the surface. That's within the distance that some of our spacecraft that orbit Earth.
An exciting event for NASA? Of course!
https://www.jpl.nasa.gov/news/news.php?feature=7390
__________________
.
"No Copyrighted Material"
Moderated forums:
World, Europe, Texas, Corpus Christi, El Paso, Lubbock, Tyler, Houston, San Antonio, Tallahassee,
Minnesota, Fish, Home Interior Design and Decorating, Science and Technology Forums
.

Need help? Click on this: >>> ToS, Mod List, Rules & FAQ's, Guide, CD Home page, How to Search
Realtors are welcome here but do see our Realtor Advice to avoid infractions.
Quick reply to this message
 
Old 05-05-2019, 02:24 AM
 
Location: Appalachian New York, Formerly Louisiana
4,348 posts, read 4,930,493 times
Reputation: 5806
I will be in my mid forties by then. I pray it hits us.
Quick reply to this message
 
Old 05-05-2019, 10:02 AM
 
22,785 posts, read 17,257,359 times
Reputation: 9491
Quote:
Originally Posted by DavePa View Post
There’s an asteroid out there called 99942 Apophis that’s over 1,000 feet wide, and it’s scheduled to fly by Earth on FRIDAY April 13th, 2029. Will speed past our planet at an estimated distance of around 19,000 miles, potentially coming closer to the surface than some orbiting spacecraft

NASA's Excited About the God of Chaos Asteroid Heading Toward Earth ......

Seems like a kind of prediction of doom possible ....

Will there be only 10-years left for earth as we know it? NASA Excited about what? Will we see it visible? if so as the time gets closer? Will it be a world concern?

Wasn't sure which forum to use .... but seems of a Great Debate and seems as the time gets close ..... we will hear more if real fear is here?

God of Chaos Asteroid Apophis is Headed for Earth
The chances of 99942 Apophis striking earth in 2029 are extremely small. If it were to hit, since that asteroid is only about 1100 feet wide, while it would cause a lot of damage locally or regionally it would not be an extinction level event. It's not an end of the world scenario.
Possible impact effects

The Sentry Risk Table estimates that Apophis would make atmospheric entry with 750 megatons of kinetic energy.[³] The impacts that created Meteor Crater or the Tunguska event are estimated to be in the 3–10 megaton range.[⁵⁴] The biggest hydrogen bomb ever exploded, the Tsar Bomba, was around 57 megatons while the 1883 eruption of Krakatoa was the equivalent of roughly 200 megatons. In comparison, the Chicxulub impact has been estimated to have released about as much energy as 100,000,000 megatons (100 teratons).

The exact effects of any impact would vary based on the asteroid's composition, and the location and angle of impact. Any impact would be extremely detrimental to an area of thousands of square kilometres, but would be unlikely to have long-lasting global effects, such as the initiation of an impact winter.[citation needed] Assuming Apophis is a 325-metre-wide (1,066 ft) stony asteroid, if it were to impact into sedimentary rock, Apophis would create a 4.3-kilometre (14,000 ft) impact crater.[¹³]

In 2008, the B612 Foundation made estimates of Apophis's path if a 2036 Earth impact were to occur, as part of an effort to develop viable deflection strategies.[⁵⁵] The result was a narrow corridor a few kilometres wide, called the "path of risk", extending across southern Russia, across the north Pacific (relatively close to the coastlines of California and Mexico), then right between Nicaragua and Costa Rica, crossing northern Colombia and Venezuela, ending in the Atlantic, just before reaching Africa.[⁵⁶] Using the computer simulation tool NEOSim, it was estimated that the hypothetical impact of Apophis in countries such as Colombia and Venezuela, which were in the path of risk, could have more than 10 million casualties.[⁵⁷] However, the exact location of the impact would be known weeks or even months in advance, allowing any nearby inhabited areas to be completely evacuated and significantly decreasing the potential loss of life and property. A deep-water impact in the Atlantic or Pacific oceans would produce an incoherent short-range tsunami with a potential destructive radius (inundation height of >2 m) of roughly 1,000 kilometres (620 mi) for most of North America, Brazil and Africa, 3,000 kilometres (1,900 mi) for Japan and 4,500 kilometres (2,800 mi) for some areas in Hawaii.[⁵⁸]

https://en.wikipedia.org/wiki/99942_Apophis
Quick reply to this message
 
Old 05-06-2019, 11:09 PM
 
Location: Caverns measureless to man...
7,260 posts, read 4,847,419 times
Reputation: 16521
Quote:
End of the World? Calls it God of Chaos Asteroid could strike earth?
All of your answers are right there in your article...


Quote:
With their data,they estimated that the object had a significant 2.7 percent chance of colliding with the Earth in 2029. Fortunately, this prediction has been definitively ruled out.

Since the rediscovery, scientists have been tracking Apophis closely, and now it is believed that the object has a tiny chance of striking our planet many decades in the future.


“We have 15 years of optical and radar tracking data on Apophis and so we have a very precise estimate of its orbit through the 2029 encounter with the Earth,” Farnocchia told Newsweek. The orbit of Apophis after the 2029 encounter has a higher degree of uncertainty, but one that will be reduced by tracking data collected during the next decade. While we cannot yet completely rule out a collision of Apophis after 2060, those chances are extremely small, less than 1 in 100,000.”

This is fortunate because if an asteroid of such size were to collide with the Earth, it could cause devastation on a continental scale, although not a global extinction, according to Farnocchia.Related Stories

So, no - we're good!
Quick reply to this message
 
Old 05-07-2019, 12:34 PM
 
Location: Seattle
2,321 posts, read 490,180 times
Reputation: 2162
If it does hit, most likely it will land in the ocean and create a moderate tsunami. A land hit would result in a 4.3 km impact crater. It's not enough to destroy the planet, but would create quite a mess in the region it lands.
Quick reply to this message
 
Old 05-08-2019, 03:06 AM
 
2,959 posts, read 1,122,120 times
Reputation: 1987
Never tell me the odds!!
Quick reply to this message
 
Old 05-08-2019, 03:36 AM
 
Location: East Coast of the United States
18,085 posts, read 20,165,259 times
Reputation: 14036
That’s right, folks. Even “science” is in the business of doomsday predictions these days.

It sure didn’t take long for things to get to this point.
Quick reply to this message
 
Old 05-08-2019, 11:06 AM
 
Location: Seattle
2,321 posts, read 490,180 times
Reputation: 2162
Doomsday prediction is nothing new for science.
Quick reply to this message
 
Old 05-08-2019, 11:21 AM
 
Location: Ohio
5,366 posts, read 1,946,518 times
Reputation: 4543
Quote:
Originally Posted by Mike555 View Post
The chances of 99942 Apophis striking earth in 2029 are extremely small. If it were to hit, since that asteroid is only about 1100 feet wide, while it would cause a lot of damage locally or regionally it would not be an extinction level event. It's not an end of the world scenario.
The Chicxulub asteroid (which caused the dinosaur extinction event) was 7 to 50 miles in diameter. Since the volume of a sphere (and the mass assuming the same material) goes up with the cube of the radius, this means that the extinction asteroid was ~20,000 times more massive than 99942 Apophis.

So it's likely an event that would only cause "local" damage. And depending on the material it might not make it very far into the atmosphere without breaking up.
Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.


 
Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply
Message:
Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Science and Technology > Space
Similar Threads
Follow City-Data.com founder on our Forum or

All times are GMT -6.

© 2005-2019, Advameg, Inc. · Please obey Forum Rules · Terms of Use and Privacy Policy · Bug Bounty

City-Data.com - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 - Top