RT @earthskyscience: When will all five visible planets appear simultaneously?
bit.ly/1X6s6JS
Hasn’t happened since 2005 … https://t.co/8TXvnE2pnU
RT @earthskyscience: When will all five visible planets appear simultaneously?
bit.ly/1X6s6JS
Hasn’t happened since 2005 … https://t.co/8TXvnE2pnU