How far have humans reached? Although there is much yet to learn about the planet Earth, humans have been reaching for the stars for a long time. What have we accomplished?

So far, there have been humans mostly in low Earth orbit. We have sent people to space in spaceships and we have inhabited space stations, but they are relatively nearby. Twelve people have walked on the moon and another 12 have orbited the moon.

But what about non-manned missions? We have sent spacecraft to explore all of the planets in the solar system and flown by Pluto, the Dwarf Planet. There are five spacecraft that are leaving the solar system: Pioneer 10, Pioneer 11, Voyager 1, Voyager 2 and New Horizons. But that is it!

Come join us on public night at the Insperity Observatory on the first Friday each month, from sunset to 10 p.m.:


Aaron Clevenson
Author: Aaron ClevensonEmail: This email address is being protected from spambots. You need JavaScript enabled to view it.
I am the observatory director at the Insperity Observatory in Humble ISD. I am also an adjunct astronomy professor at Lone Star College-Montgomery where I teach solar system astronomy and stars and galaxies astronomy. I am the author of the astronomy textbook, “Astronomy for Mere Mortals.” I am a past president of the North Houston Astronomy Club, and was the chair of Astronomy Day in Southeast Texas in 2015 and 2016. He is an observing program director with The Astronomical League, coordinates their Master Observer Progression Awards, and has authored six of their observing programs.

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