The 5,000th Earth approaching asteroid discovered by the Catalina Sky
An asteroid that changes color!
Why does a black hole end in a singularity? How can we measure distances to stuff in space?
A strange moving object are actually three small objects embedded in a cloud of gas and dust. And asteroid Hektor & its moon created from asteroid collision
Asteroid search program focus focus on finding the large asteroids which pose a threat to Earth & manned mission to an asteroid.
The potentially hazardous asteroid Asteroid 1998 QE2 & Apophis. #365DaysOfAstro
Jupiter roles to protect Earth from impacts by long period comets & a fireball, meteor that bright enough to be seen in the day time. more at #365DaysOfAstro
The discovery of a bright new star in the irregular galaxy M82 & Asteroid 2013 TV 135
R. A. Kowalski found 2008 TC3 & Your host, Al Grauer, discovered the 1kilometer-diameter Centaur type asteroid.