The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan. Mercury, which is the closest planet to the sun, would be the first to be ...

the farthest planet from the sun, takes a staggering 60,190 days – equivalent to 165 Earth years – to complete a single revolution. When their orbits align just right, we can observe multiple ...