Galileo drew the stars using four different sizes to distinguish their different brightnesses, and he published his findings in 1610. Today, spacecraft and orbiting telescopes join ground-based observers to learn more about our galaxy.
Jane is an astronomer, NASA science podcast developer, writer, educational and outreach artisan
and social media enthusiast. She and her husband have an asteroid
named after them. She's also the human behind the @CassiniSaturn Twitter Account.