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Johnston's Archive
Astronomy and Space |
Asteroids and TNOs with satellites (508 systems, 528 companions as of 28 November 2023)
Pluto and its moons (Pluto system summary information and images, following New Horizons flyby)
A TEXAN definition of a planet
1I 'Oumuamua (2017 U1): The first interstellar object within our solar system
solar system, general:
various topics:
Mars:
Europa:
asteroids:
Pluto:
other trans-Neptunian planets:
trans-Neptunian objects:
comets:
interstellar objects within the solar system:
solar system exploration:
stellar and extrasolar planet information:
relativistic objects:
other material:
A brief commentary on sky watching--a synopsis of things to look for in the night sky and links for more information. Some specific information for observers in parts of Texas is included.
Observing man-made Earth satellites--a discussion of how to look for visible satellites in the night sky.
Heaven's Above predictions for viewing satellites from Brownsville, TX (external link)
Links for sky watchers
Astronomy information links
- general:
- solar system, general and planetary:
- solar system, exploration missions:
- solar system, asteroids:
- solar system, comets:
- extrasolar planets:
- brown dwarfs:
- nearby stars:
- stellar and other:
Other space links
Banner image: Io and Jupiter, taken by Cassini in 2000 (credit: NASA/JPL/Univ. of Arizona).
Comments? Questions? Corrections? Contact me.
Copyright © 2001-2022, 2023 by Wm. Robert Johnston. All rights reserved.
Last modified 28 November 2023.
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