3E-3-Finding Earth Approaching Objects
Using 2 telescopes near Tucson Arizona, the NASA funded, Catalina Sky Survey searches for Earth Approaching Objects. The method is to take 4 images of the same part of the sky spaced out over 45 minut...
21 Dec 20182min
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 both the Earth and Moon.
18 Dec 20182min
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?
14 Dec 20182min
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 diameter. It entered the Earth's atmosphere and exp...
11 Dec 20182min
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. Bottom line is that Mtn Ops does whatever it takes to...
7 Dec 20182min
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 facing away from us.
4 Dec 20182min
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 fireball appeared in the sky over Russia.
30 Nov 20182min
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 through the constellation of Pegasus at 8.8 miles/se...
27 Nov 20182min
