653-Biggest Ear(300)
China has built and is operating the world's largest Radio telescope.
13 Elo 20212min
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. Currently there are international efforts, like the outer ...
10 Elo 20212min
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 in every million years or so an asteroid impact by...
6 Elo 20212min
140E-152-Big and Bad
n the space of a couple of days the Catalina Sky Survey found 3 potentially dangerous asteroids.
3 Elo 20212min
651-Spotting Meteors(397)
30 Heinä 20212min
139E-151-A Climate Changer
Large asteroids which impact the Earth can cause global change.
27 Heinä 20212min
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. Even so it is less than 40 years ago that we were fi...
23 Heinä 20212min
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 orbit around the Sun by continuing to measure its c...
20 Heinä 20212min
