RT @BelugaSolar: Although the sun is 90 million miles from Earth, it takes less than 10 minutes for light to travel from that much o… https://t.co/DSG97n8P2V
RT @BelugaSolar: Although the sun is 90 million miles from Earth, it takes less than 10 minutes for light to travel from that much o… https://t.co/DSG97n8P2V