it is rare to have an opportunity to observe multiple planets simultaneously without the need for instruments like ground telescopes. Such an event is also commonly known as a "planet parade ...

Mars – dusty, dry, and desert-clad – was once so rich in water it had not just lakes, but oceans, according to a new study.

Is a 'planet parade' rare? How often do 7 planets align? While alignments themselves aren't special, it is rare to have an opportunity to observe multiple planets simultaneously without the need for ...