Planetary Nebula: A New Twist

Running time: 3 min 20 sec

QUICKTIME VIDEO FORMAT

• 640x480 - 23.69 MB

WINDOWS MEDIA PLAYER FORMAT

• 320x240 - 34.56 MB

MACROMEDIA FLASH FORMAT

• 320x240 - 12.79 MB
• 640x480 - 29.03 MB

MPEG-1 FORMAT

• 320x240 - 13.62 MB

Planetary nebulae form when dying stars cast off their outer layers of gas. Astronomers combined observations from many telescopes to envision a three-dimensional form for the Helix Nebula, the planetary nebula closest to Earth. See the new shape in this short broadcast, called a HubbleMinute.