Asteroid Day

[XM5ER]

https://www.space.com/17933-nasa-television-webcas...

Live webcast with
Host: Brian Cox, physicist, School of Physics and Astronomy, Uni of Manchester
Rusty Schweickart, US Apollo 9 Astronaut; Co-founder of Asteroid Day and B612
Ed Lu, three time US Shuttle Astronaut; Co-founder, B612
Dorin Prunariu, first Romanian Astronaut; ASE president, UN COPUOS
Michel Tognini, two time ESA astronaut, trained French Air Force pilot
Jean-François Clervoy, three time ESA astronautandFrench engineer
Nicole Stott, two time US Shuttle Astronaut, Aquanaut and SciArt Advocate
Susan McKenna-Lawlor, astrophysicist, Principal Investigator, Giotto
Julia De Leon, astrophysicist, Instituto Astrofísica de Canarias
Mark Boslough, physicist Chair of Asteroid Day Expert Panel
Patrick Michel, planetary scientist, researcher at the CNRS
Marco Fuchs, Owner and CEO OHB SE
Etienne Schneider, Deputy Prime Minister of Luxembourg"

Interesting.

[Boring_Chris]

The news outlets have been packed full of asteroid / meteor stories recently. Are they slowly buttering us up for the end of the world? Or have I missed something.

[Eric Mc]

Probably bored throwing rocks at Trump - so throw rocks at the whole planet instead.

[Boring_Chris]

It did seem like the trash Right leaning sites were the worst for it.

[Eric Mc]

Armageddon is their stock in trade.

[XM5ER]

Boring_Chris said:

It did seem like the trash Right leaning sites were the worst for it.

They tend to be run by survivalist types selling survival kits, so a bit of disaster always keeps the money rolling in.

[ruggedscotty]

Who is watching the news just now ? I cant believe it, Honestly. Its all over the channels and its not looking good, they say our chances of survival are slim.

never thought it would end this way, thought it would have been a war or disease but this ?

[jmorgan]

You may jest, but......
http://www.passc.net/EarthImpactDatabase/Worldmap....

Now then, we have not found them all and craters are not left in water......

[Eric Mc]

If its big enough, it wouldn't even notice any water. The one that knocked out the dinos impacted the ocean and left a crater.

[ruggedscotty]

There is so much coming out now about these, finding many and there will be more to be found, the earth has been around a long time as we have not experienced such an event it is difficult for us to imagine what it would be like. it will happen though, and it will be unbelievable.

We are not prepared for it and probably never will be.

[jmorgan]

Yep, but that crater was not realised until recently. Any water hits making it to the bottom tend to get covered back up with water and harder to find. And area's of the sea bed are constantly recycled.

[Simpo Two]

It makes a welcome change from Trump-bashing, May-bashing, Brexit-bashing and anything else the BBC hacks don't personally agree with.

[Eric Mc]

The crater remained unfound not because the impact hit the water but because over millennia sea floor spreading, continental drift and other geological processes had gradually hidden it,. I would guess that a fairly sizeable crater would have been visible for around 10 million years after the event before earth's geological processes and weathering covered it up.

It is estimated that the asteroid that hit was around the size of Mount Everest. That would make it about five to six miles across. It struck what was then a fairly shallow sea - only a few thousand feet deep at most so it would have been like shooting a melon with a bullet. The sea would have acted like the melon's skin.

[jmorgan]

They all have some info if it is available on that site. 150km diameter Aprox.
http://www.passc.net/EarthImpactDatabase/chicxulub...

[mybrainhurts]

Is there any way we can get it to land on Russell Brand?

[Wobbegong]

jmorgan said:

You may jest, but......
http://www.passc.net/EarthImpactDatabase/Worldmap....

Now then, we have not found them all and craters are not left in water......

The aliens don't like the Aussies or Yanks do they?

[jmorgan]

Wobbegong said:

jmorgan said:

You may jest, but......
http://www.passc.net/EarthImpactDatabase/Worldmap....

Now then, we have not found them all and craters are not left in water......

The aliens don't like the Aussies or Yanks do they?

I was pondering that. Proof of area 51 and all that.....

I guessed it was surveying for mineral etc. that has done that more than aliens.

We will never know........

[caelite]

Near misses should always be seen as opportunities, it won't be long before we are able to send up craft to circularise and exploit the bountiful resources held within some of these asteroids.

Can you imagine it, enough rare earth metals to destabilise the global economy flying around the earth, able to be deorbited anywhere with minimal energy spend, or used in orbit for construction, the next great step in human evolution.

Pioneers are seeing this as a possibility within the next 20 to 40 years.

[jmorgan]

Bet some environmental group tries to block it.

[Einion Yrth]

caelite said:

it won't be long before we are able to send up craft to circularise and exploit the bountiful resources held within some of these asteroids.

Really? Megatonnes of mass and some kps of delta-v? Far, far beyond current capabilities in terms of anything we couldn't just leave to burn up in the atmosphere.