This video shows how fictional planets from books, TV, film, and video games compare in size, from the impossibly small to the unfathomably big. The post Comparing the Sizes of Fictional Planets ...

The Solar System is home to a remarkable range of planets, from tiny rocky worlds to massive gas giants. But just how big are ...

Why Your Kid Likes Comparing Neptune to a Dust Mite Bigger than a planet? Smaller than an atom? Size comparison videos are all the rage and may scratch a very old itch.

Now, we have here another comparison, and this time it’s countries measuring up against each other. That is, measuring up against each other in terms of size—if they were planets.

An artist’s impression comparing TRAPPIST-1 planets to the Earth at the same scale. Credit: M. Kornmesser / ESO Illustration of comparative biosignatures and habsignatures in an extrasolar system.

In the Star Trek universe, the star 40 Eridani A hosts Spock’s home planet. Fans were elated by the discovery, comparing planet HD 26965 b to the fictional Vulcan.

Transmissions between Earth and our own spacecraft could tell us where to look for potential alien transmissions.