YouTube home Comedy Week on YouTube
Upload

ScienceCasts: Some Comets Like It Hot

ScienceAtNASA ScienceAtNASA·113 videos
66,236
21,403
Like     Dislike 5

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to like ScienceAtNASA's video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to dislike ScienceAtNASA's video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to add ScienceAtNASA's video to your playlist.

Uploaded on Jan 12, 2012

Visit http://science.nasa.gov/science-news/... for more.

Astronomers are still scratching their heads over Comet Lovejoy, which plunged through the atmosphere of the sun in December and, against all odds, survived. The comet is now receding into the outer solar system leaving many mysteries behind.

Loading icon Loading...

Loading icon Loading...

Loading icon Loading...

The interactive transcript could not be loaded.

Loading icon Loading...

Loading icon Loading...

Ratings have been disabled for this video.
Rating is available when the video has been rented.
This feature is not available right now. Please try again later.

All Comments (74)

Sign in now to post a comment!
  • Selena Gonzales

    People better behave cuz the world could end. If you shoot or dis respect god k so if u love your life then BEHAVE that's why several ppl getting shooted (true true) •___•

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate Selena Gonzales's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate Selena Gonzales's comment.
  • Clemons Kunkel

    Comet (dirty ice ball) has two tails caused by the ice that is melted from the sun and the Solarwinds moving them. The tail is not the direction of the comet but the direction of the Solarwind.

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate Clemons Kunkel's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate Clemons Kunkel's comment.
    in reply to camellset (Show the comment)
  • Iggyocracy - The OmniMalcontent

    Come On, not even a warning? There's kids watching! You can't just throw up blatant frauds like this! At least, a "we may have a drinking problem, this content may be disturbing to those with eyes & brains" or a "please pardon our anal leakage, it may be offensive to some viewers".

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate Iggyocracy - The OmniMalcontent's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate Iggyocracy - The OmniMalcontent's comment.
  • EpicHeny

    :O

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate EpicHeny's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate EpicHeny's comment.
  • liam quinn

    yes they are ... i think your mistaken for meteorites

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate liam quinn's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate liam quinn's comment.
    in reply to camellset (Show the comment)
  • camellset

    comets are not always ice...

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate camellset's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate camellset's comment.
  • addicted2info

    love never dies yo

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate addicted2info's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate addicted2info's comment.
  • you2tooyou2too

    From other astronomical descriptions, and from just looking at the animations, it is not that the comet passed on the far side of the sun. Both the comet and the tip of the tail follow a smooth crescent (ellipse), except for the gap while the comet is tunneling. As for 'ice' surviving, I can imagine it is something like a long lasting drop of water on a hot skillet, where the vaporizing forms an efficient lubricating & insulating skin or shield.

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate you2tooyou2too's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate you2tooyou2too's comment.
    in reply to Saparonia (Show the comment)
  • you2tooyou2too

    'Spark' seems wrong. The tail is presumably mostly compounds more volatile than 'rock', produced by the impact & gentle 'force' of the solar wind. As a comet get closer to the sun, the radiation/wind density increases, heating the sun-side surface, evaporating volatiles, & ablating some stable materials which are then all driven leeward, and illuminated & perhaps luminesced by the sunshine & wind.

    I expect the tail to fail inside the atmosphere where terbulence prevails.

    ·

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate you2tooyou2too's comment.

    Sign in to YouTube

    Sign in with your YouTube Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to rate you2tooyou2too's comment.
  • Loading comment...
Loading...
Loading...
Working...
Sign in to add this to Watch Later