Explanation: Sometimes, regions of planet Earth light up with fire. Since fire is the rapid acquisition of oxygen, and since oxygen is a key indicator of life, fire on any planet would be an indicator of life on that planet. Most of the Earth's land has been scorched by fire at some time in the past. Although causing many a tragedy, for many places on Earth fire is considered part of a natural ecosystem cycle. Large forest fires on Earth are usually caused by lightning and can be visible from orbit. Above, in the year 2000, stunned elk avoid a fire sweeping through Montana's Bitterroot Valley by standing in a river.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: Fire - Earth - pozhary - zhizn' vo Vselennoi - Zemlya Publikacii so slovami: Fire - Earth - pozhary - zhizn' vo Vselennoi - Zemlya
Sm. takzhe: Zahod Zemli s "Oriona" Protivosumerechnye luchi i festival' planet Voshod Zemli: video Udarnyi krater Manikuagan: vid iz kosmosa Zemlya i Luna: vid s drugoi storony Snezhnaya burya 1938 goda v Verhnem Michigane Polet nad nochnoi Zemlei – II Vse publikacii na tu zhe temu >>