Skip to main content

QUICK LINKS

Posted by Specola

NASA Astronomy Picture of the Day:

What makes a meteor a fireball? First of all, everyone agrees that a fireball is an exceptionally bright meteor. Past that, the International Astronomical Union defines a fireball as a meteor brighter than apparent magnitude -4, which corresponds (roughly) to being brighter than any planet -- as well as bright enough to cast a human-noticeable shadow. Pictured, an astrophotographer taking a long-duration sky image captured by accident the brightest meteor he had ever seen. Clearly a fireball, the disintegrating space-rock created a trail so bright it turned night into day for about two seconds earlier this month. The fireball has been artificially dimmed in the featured image to bring up foreground Lake Louise in Alberta, Canada. Although fireballs are rare, many people have been lucky enough to see them. If you see a fireball, you can report it. If more than one person recorded an image, the fireball might be traceable back to the Solar System body from which it was ejected.

Photo by Hao Qin

PROMOTE YOUR EVENTS, ART AND MORE

Click the Image to learn more about us

Read more from Pepe's Painting LLC
Read more from Kudos 365

Snohomish, Skagit and Island County

Giving Kids in Need the Chance to Read
  Non-profit organization - Seattle, WA

Powered by Volunteers | 360-794-7959

Feedback