Dr. Bruce Betts (@randomspacefact) 's Twitter Profile
Dr. Bruce Betts

@randomspacefact

Random space facts, easy astronomy. Planetary science. Chief Scientist at Planetary Society. Children's book author. Alum @Caltech, @Stanford, @JesuitHighSac

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linkhttp://randomspacefact.com calendar_today30-03-2009 20:47:07

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Dr. Bruce Betts (@randomspacefact) 's Twitter Profile Photo
Dr. Bruce Betts
@randomspacefact

3 years ago

Not just planets, but also amazing moons are covered in my new book, Solar System Reference for Teens. Some of the most incredible Solar System worlds are moons including the Galilean satellites of Jupiter. Learn more/pre-order here: amzn.to/3sbJa57

Not just planets, but also amazing moons are covered in my new book, Solar System Reference for Teens. Some of the most incredible Solar System worlds are moons including the Galilean satellites of Jupiter. Learn more/pre-order here: amzn.to/3sbJa57