Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Will Asteroid 2024 YR4 Strike Earth? NASA Revises Impact Probability
Scitech Daily ^ | February 20, 2025 | NASA

Posted on 02/20/2025 5:17:35 AM PST by Red Badger

click here to read article


Navigation: use the links below to view more comments.
first previous 1-2021-35 last
To: Red Badger

“Lucifer’s Hammer” by Niven and Pournelle.


21 posted on 02/20/2025 5:58:08 AM PST by dynachrome (Auslander Raus!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

Wolf-Biederman ?


22 posted on 02/20/2025 6:01:10 AM PST by woodbutcher1963
[ Post Reply | Private Reply | To 16 | View Replies]

To: dynachrome

Loved that book! Read it when it first came out!............


23 posted on 02/20/2025 6:02:59 AM PST by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
[ Post Reply | Private Reply | To 21 | View Replies]

To: Red Badger; SunkenCiv; MtnClimber

Implanting that rocket engine - after a successful “gentle and accurate landing” of the engine, its guidance package and fuel tanks on the rapidly spinning and tumbling rock! - will be very, very difficult.

Once landed, then as you point out, it needs to be securely implanted into the rock (or metal and rock or gravel or whatever is found) so the rocket thrust actual gets aimed where it needs to be pointed so the impact point is moved to a “safer” position for future orbits.

My opinion? Measure, then blast it with a big (50 to 100 Megaton) into 2 or 3 smaller blobs. Each blob will have a new trajectory. Each impact will stop higher in the atmosphere too.


24 posted on 02/20/2025 6:21:37 AM PST by Robert A Cook PE (Method, motive, and opportunity: No morals, shear madness and hatred by those who cheat.)
[ Post Reply | Private Reply | To 12 | View Replies]

To: Red Badger

A bit dated, but an excellent survival novel.


25 posted on 02/20/2025 6:25:20 AM PST by dynachrome (Auslander Raus!)
[ Post Reply | Private Reply | To 23 | View Replies]

To: The_Media_never_lie

We need a moon colony, and soon!


26 posted on 02/20/2025 6:26:47 AM PST by ChessExpert (The Democratic party must be destroyed.)
[ Post Reply | Private Reply | To 5 | View Replies]

To: Robert A Cook PE; Red Badger

Stopping the (probably multi-axis) rotation of a rock could be done a few different ways. A small nuke would work. An impact from a different, smaller hunk of Solar System debris would work, and would be within current technical limits.

https://freerepublic.com/focus/chat/4296982/posts?page=22#22


27 posted on 02/20/2025 6:50:19 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
[ Post Reply | Private Reply | To 24 | View Replies]

To: 75thOVI; Abathar; agrace; aimhigh; Alice in Wonderland; AnalogReigns; AndrewC; aragorn; ...



28 posted on 02/20/2025 6:50:48 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
[ Post Reply | Private Reply | View Replies]

To: SunkenCiv; Red Badger; MtnClimber

There is a lot to be said about a pure impact (heavy mass) impact. But, in addition to the obvious need to verify the asteroids actual mass and precise orbit so the need for changing the orbit at all is determined, we need a good vector for the fragments after the impact is known.

Last I heard the mass was uncertain by a factor of over 8. Total kinetic energy uncertain from 5 Megaton to 90 Megaton.

(Boeing should change its current go-to-the-moon-with-a-manned-rocket, and reprogram its failing big booster program. Otherwise, SpaceX will grab this contract too.

A simply flyby (or two) will test the long-range, deep space process. After a flyby (and Orbital refueling process works), then small impactors to determine mass of the rock are feasible.


29 posted on 02/20/2025 7:38:31 AM PST by Robert A Cook PE (Method, motive, and opportunity: No morals, shear madness and hatred by those who cheat.)
[ Post Reply | Private Reply | To 27 | View Replies]

To: FlingWingFlyer; Brooklyn Attitude; Red Badger; Track9; Vermont Lt; AdmSmith; BeauBo; PIF; ...

Don’t worry, President Musk will take care of the problem. After all he would not want his Mar a Lago estate which he purchased from the late President Trump’s heirs to be drowned by a tsunami caused by this asteroid.

President Musk? Well, if you can get rid of “birth right citizenship”, surely birth right Presidency cannot be far behind. Unfortunately for The Arnold, he will be too old to help the Republican Party by this time.


30 posted on 02/20/2025 10:55:14 AM PST by gleeaikin ( Question authority as you provide links )
[ Post Reply | Private Reply | To 10 | View Replies]

To: gleeaikin

Great point! I still can’t understand how someone becomes a U.S. citizen if they take their first dump on American soil.


31 posted on 02/20/2025 10:57:20 AM PST by FlingWingFlyer (The U.S. Government was never meant to be a jobs program.)
[ Post Reply | Private Reply | To 30 | View Replies]

To: FlingWingFlyer

Apparently it is part of the Constitution which the President is sworn to protect and defend. Even if the President does not do his job, changing the Constitution is a long drawn out process.


32 posted on 02/20/2025 11:07:39 AM PST by gleeaikin ( Question authority as you provide links )
[ Post Reply | Private Reply | To 31 | View Replies]

To: Red Badger

“The angle of impact is also vitally important..”

Not if it lands on you.


33 posted on 02/20/2025 11:19:28 AM PST by Brooklyn Attitude (Election day 2024, Happy Days Are Here Again!)
[ Post Reply | Private Reply | To 8 | View Replies]

To: gleeaikin

It doesn’t need to be changed. It only be read as it was written. Even the guy who wrote it said it does not apply to illegal aliens. It was written for former slaves. They even had to pass the Indian Citizenship Act of 1924 to grant U.S. citizenship to American Indians.


34 posted on 02/20/2025 11:19:37 AM PST by FlingWingFlyer (The U.S. Government was never meant to be a jobs program.)
[ Post Reply | Private Reply | To 32 | View Replies]

To: Brooklyn Attitude

LOL, we were talking about a tsunami.......A 90° impact would make a huge wave in all directions...............


35 posted on 02/20/2025 11:30:34 AM PST by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
[ Post Reply | Private Reply | To 33 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-35 last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson