saturn

Last month, Jupiter and Saturn treated skywatchers to a spectacular, once-in-a-lifetime “great conjunction,” when they were closer in the night sky than they had been since medieval times. Now, as our solar system’s two largest planets continue to drift apart, they will be joined by a third — Mercury — forming a rare three-planet conjunction. […]

Before 2020 comes to a close, Jupiter and Saturn will be so close that they will appear to form a “double planet.” Such a spectacular great conjunction, as the planetary alignment has come to be known, hasn’t occurred in nearly 800 years. When their orbits align every 20 years, Jupiter and Saturn get extremely close to […]