NASA Planetary Defense: Asteroid Day Live

NASA marked the 2017 International Asteroid Day with a live program featuring the agency's Planetary Defense Coordination Office and other projects working to find and study near-Earth objects (NEOs).

Learn how NASA-funded researchers find, track and characterize NEOs -- asteroids and comets that come within the vicinity of Earth's orbit and could pose an impact hazard to Earth -- and how NASA is working to get our nation prepared to respond to a potential impact threat.

The shows includes guests from NASA and NASA-funded planetary defense coordination programs across the country, including the agency's Headquarters in Washington and Jet Propulsion Laboratory in Pasadena, California.

[leighbarton]

When all is said and done, more will be said than done.

[leighbarton]

It seems that the comments have taken a derisive turn instead of attempting to provide constructive input. Disappointing. However, the attitudes prevailing explain why the comments are ignored.

[floppypancake]

Man, love the 90's soundtrack! Where can I pick these beats up?

[leighbarton]

From my perspective. the first step in creating a comprehensive defense of this planet would be to remove the debris field surrounding it. All the junk floating in near-earth orbits poses an impact hazard to the infrared satellites that are needed to observe distant objects effectively. Once monitoring satellites are in place a defense reaction force could be deployed to employ available methods of diverting or destroying any asteroids or meteorites that become a threat.

[Jenab]

Nobody ever made a prediction of Apophis' orbit corrected for the Yarkovsky effect. What they're probably doing is predicting the orbit from a least-squares method-of-Gauss algorithm that gives equal weight to all of the observations. That could be misleading, since the Yarkovsky effect, acting over time, would make the precise orbit non-Keplerian. Long-ago observations of Apophis from the archives would be the least reliable for use in predicting the asteroid's future path, and, indeed, their use might lead to worse predictions instead of better ones. The Yarkovsky effect is a small acceleration due to the differential radiation of heat from a spinning asteroid.

[davidbuschhorn]

Did we know that Russian one was coming? Seems like no. :-(

[avivfrai]

Space boulders everyone, we've got to watch out.

[zapfanzapfan]

45:00 Proof that Amy is hot ;-)

Radar of that asteroid looked a lot like the comet Rosetta visited, sort of rubber duck shaped. Maybe also a contact binary?

[jeffkey]

1.2 million miles and we can't find Jesus yet

[Ascendaeus]

All we Gotta Do is make the Ship from the Asteroids Game that Obliterates Asteroids with it's Crazy little Laser thing & we're Good! XD

[DAVIDBLADENVIDIA]

artificial intelligence, Nvidia, JPL <3

[jayg.a]

Apocalyptic scripture regarding a large boulder the size of a large milestone being thrown into the sea. Read Revelation chapter 18. The boulder is spoken of in 18:21-24. If it's been foretold, nothing will stop it.

[Tlactl]

Telescopes aren't really planetary defense, they are just asteroid detectors

[pearlwhitebuffalo]

Hey NASA. I think the key to asteroid discovery would be to know where they are coming from. (ANSWER) = Think of Jupiter's giant red spot as an exit wound from a high velocity projectile in which all the periodic comets and moons thereof were born and as the lesser velocity projectiles return to where they were born pass through this hole in Jupiter tearing off more and more chunks of debris casting out into spaces vacuum at lesser velocities these asteroids which go towards the Sun and upon impacting the Sun's surface burn up and cast out massive solar flares. (IT"S CALLED FEEDING THE SUN). Anyways after 75K years the spindle of Jupiter has been ripped down to about 1/5 the size of the diameter of the equator. (HELPING THE HUE MANS WITH GALACTIC FORENSICS} IHVH