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515-Dust Moons
The discovery of two large ghostly neighbors approximately 65,000 by 45,000 miles in size at the L4 and L5 sites approximately 250,000 miles from bot…
7 years, 6 months ago
2E-Voyager I's Baby Step
Looking into the sky on a clear-dark night, have you wondered what it would be like to travel in deep space?
7 years, 6 months ago
514-Close Space Rocks
Since 1900 there have been 11 close approaches by asteroids larger than 300 feet in diameter. One of them, the Tunguska Object was about 400 feet in …
7 years, 6 months ago
513-Mtn Ops
My team, the Catalina Sky Survey, would not find a single asteroid without Steward Observatory's Mountain Lemmon Operations, or Mtn Ops for short. Bo…
7 years, 6 months ago
512-Aten
Aten Asteroids are stealthy space rocks which can be dim and hard to detect since for most of their path about the Sun their illuminated side is faci…
7 years, 6 months ago
E1-Russian Fireball February 15, 2013
Have you wondered what would happen if a rock from space landed near one of our large cities? We got a clue on February 15, 2013 when a large firebal…
7 years, 6 months ago
510-Fourth Closest
Ten hours and 46 minutes after my Catalina Sky Survey teammate Greg Leonard discovered a Toyota RAV4 sized space rock, now named 2018 UA, streaking t…
7 years, 6 months ago
509-Close
Until recently the discovery of very close approaching asteroids was rare, however, due to improvements in telescopes, cameras, and computers asteroi…
7 years, 7 months ago
508-Quiet Sun
Don't count on the decrease in solar activity to save you from human produced global warming, however something potentially important to you is happe…
7 years, 7 months ago
507-Eric's Night
Recently my Catalina Sky Survey teammate Richard Kowalski was asteroid hunting in the constellation of Pegasus with our Schmidt telescope on Mt. Bige…
7 years, 7 months ago