Frequently Asked Questions
Can you see any planets with the "naked eye?"
Mercury, Venus, Mars, Jupiter and Saturn can be seen with the unaided eye. That is how they were discovered by ancient civilizations.
Uranus and Neptune were discovered using telescopes.
HubbleSite and STScI are not responsible for content found outside of hubblesite.org and stsci.edu
Next question: Are there differences among the planets in our solar system?
Previous question: How many planets are there in our solar system?
See all questions and answers on one big page.
Return to question list for Solar System
Return to FAQ home