Let’s try a demonstration that we all enjoyed in elementary school. Close one eye, hold out your thumb at arm’s length, and align it with an object on the other side of the room. Without moving your ...

Countless stars in the Milky Way are being raised and lowered by a gigantic wave. This was discovered using data from the ...

Tomorrow evening will see Saturn and a waxing gibbous moon rising together in the southeast at sunset. Saturn will be bright ...