... A Total Eclipse Over Africa . 11.07.2001 . What's that dark spot on the Sun? ... Last month, on June 21, a total solar eclipse was visible in parts of Africa. ... Air Pollution Earth . ... Outward bound, this primordial piece of the solar system is still just visible to the unaided eye and can now be sighted by northern hemisphere skygazers as it moves through the constellation Pisces. ... This teaming ball of stars is the brightest globular cluster visible in Earth's northern hemisphere. ...