733-Lunar Space Rock(521)
Recently, my Catalina Sky Survey teammate Hannes Groller discovered an Earth approaching asteroid which has a speed consistent with it being ejected from the Moon by the impact of an asteroid or comet...
24 Helmi 20232min
222E-234-Salty and Cold
There is increasing evidence that Jupiter's moon Europa, Saturn's moon Enceladus, and other bodies in our solar system have oceans of salty liquid water in contact with warm rock layers. We know that ...
21 Helmi 20232min
732-Comet Lemmon(520)
Comets Travel Between Stars. An interstellar traveler visits our neighborhood on its tour of the Milky Way. Comet Lemmon will continue on a hyperbolic path into deep space. In 2043 it will be further ...
17 Helmi 20232min
221E-233-Tiny Visitor
Asteroids are part of our environment.An SUV sized space rock has spent eons traveling through the silent vacuum of space. In the past 50 years, without humans being aware of its existence, it has mad...
14 Helmi 20232min
731-Greg's Comet(519)
The discovery of a Jupiter family comet whose fate is to become a garden variety main belt asteroid.
10 Helmi 20232min
220E-232-Dangerous Aten
Aten asteroids pose a threat as well as an economic opportunity for humans.
7 Helmi 20232min
730-Busy Night(518)
On Halloween night while observing with the Catalina Sky Survey's 60 inch telescope on Mt. Lemmon, Arizona I discovered 21 space rocks streaking through the night sky. The most interesting one could b...
3 Helmi 20232min
219E-231-Hot Hand
Every year asteroid hunters discover about a hundred objects which are larger than 450 feet in diameter and come closer than 20 times the Moon's distance from us. We call these potentially hazardous a...
31 Tammi 20232min
