unknownskywalker:

Lunar Eclipse: Earth’s Shadow by Brendan Alexander

Total lunar eclipse of June 15, 2011.

• In class: 1+1=2
• Exercises: 1+2+1=4
• Test: John buy 4 oranges. He eats one and gives another to Ted. Calculate the sun's mass.

ladyxgaga:

The evolution of Gaga.