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Can I learn the order & size of the Planets?

Can I learn the order & size of the Planets? @JackSucksAtLife @JackSucksAtStuff @JackMasseyWelsh @JackSucksAtClips on JackSucksAtGeography we upload a range of easy to watch & sometimes educational ...
Astronomy

Before spacecraft, how did astronomers determine the mass, size, and composition of the giant planets?

Planetary size was determined pre-spacecraft by measuring the planet's angular diameter and its distance from Earth (in AU, later converted to terrestrial units after the AU was accurately measured ...
SpaceNews

TRAPPIST-1 Has 7 Earth-Size Planets

Five years ago, astronomers revealed a spectacular collection of other worlds: the TRAPPIST-1 system. Newspapers around the world printed the discovery on their front pages: Astronomers had found that ...
SpaceNews

Five Earth-Size Planets Discovered by NASA’s Kepler Spacecraft

Astronomers poring over four years of data from NASA’s Kepler spacecraft have discovered a star that’s 11.2 billion years old and has at least five Earth-size planets. “We thus show that Earth-size ...