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141E-153-Alien Invaders
The most likely alien invaders are viruses or other bits of living materials that humans have exported from or imported to Earth's biosphere. Current…
4 years, 8 months ago
652-Our Number(314)
My Catalina Sky Survey teammate Greg Leonard discovered, 2016 WJ1, a relatively large asteroid which can come close but will not hit the Earth. Once…
4 years, 9 months ago
140E-152-Big and Bad
n the space of a couple of days the Catalina Sky Survey found 3 potentially dangerous asteroids.
4 years, 9 months ago
139E-151-A Climate Changer
Large asteroids which impact the Earth can cause global change.
4 years, 9 months ago
650-Jupiter(396)
Jupiter has been observed throughout human history and is so bright that you can even spot it under the artificial light dome of one of our cities. E…
4 years, 9 months ago
138E-150-How Big It Is
Asteroids are moving points of light in the night sky, which shine by reflected Sun light. The asteroid hunting community determines a new object's …
4 years, 9 months ago
649-30 Days of Traffic
During a recent 30 day period asteroid hunters spotted 88 small space rocks passing through our neighborhood. Their diameters ranged from the length…
4 years, 9 months ago
137E-149-Near Venus to Past Jupiter
About a month before my Catalina Sky Survey teammate Rik Hill spotted it, a 5 football field diameter asteroid had been almost as near to the Sun as…
4 years, 9 months ago
648-Smoky Nights
Until recently smoky nights at the observatory were rare. Now they have become more common place as wild fires continue to devastate portions of the …
4 years, 9 months ago