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Posts by
David Callejas
April showers – almost – in Sweden
Rain that falls from a cloud but evaporates before reaching the ground is called virga.
April 4, 2013
Comet PANSTARRS near Andromeda galaxy
Look for Comet PANSTARRS in early April 2013 near the Andromeda Galaxy.
April 2, 2013
Video: One year of the moon in 2.5 minutes
Take 2.5 minutes to watch this animation shows the phases of the moon, captured hourly, throughout the course of one whole year
March 10, 2013
Gang of chimps kills their alpha male
In a rare display of behavior, a group of four chimps recently took down their leader.
March 10, 2013
Time-lapse of San Francisco Bay sky, clouds and sea
Sit back, relax and enjoy nature's wonders.
March 8, 2013
Video: Harlem shake lab edition
Video of students at Northwestern University doing the Harlem Shake in lab.
March 5, 2013
Snowflakes on wood
One of the few upsides to the recent snow storms has been the beautiful snowflake images we have received through e-mail and Facebook.
March 3, 2013
Video: New ring discovered in Earth’s radiation belts
Observations from NASA’s Van Allen Probes reveal an isolated third ring in the outer radiation belt.
March 1, 2013
