RT @Astroguyz: #Onthisday 1807: #Asteroid 4 Vesta discovered by Heinrich Olbers: bit.ly/9bu8C Can be seen with the unaided eye.
RT @Astroguyz: #Onthisday 1807: #Asteroid 4 Vesta discovered by Heinrich Olbers: bit.ly/9bu8C Can be seen with the unaided eye.