The sky on
your birthday.
Kepler Discovers How Planets Move
Johannes Kepler used precise astronomical data from Tycho Brahe to describe how planets move. He showed that planets orbit the Sun in ellipses, not perfect circles. Kepler also discovered that planets speed up when they are closer to the Sun and that more distant planets take proportionally longer to complete their orbits. These three laws revolutionized our understanding of planetary motion.
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Released on your day
Space pictures released on your month and day in other years, or a few days either side. Each one is sharp enough to print as a poster.
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Released on 13 September 2015 SDO Transit, September 2015 See it as a poster -
Released on 13 September 2019 The Large Magellanic Cloud revealed by VISTA See it as a poster -
Released on 13 September 2018 BUFFALO’s view on Abell 370 See it as a poster -
Released on 13 September 2007 Infrared Coronet Cluster See it as a poster -
Released on 13 September 2021 The International Space Station orbits 266 miles above the north Pacific Ocean off the coast of British Columbia See it as a poster
In tropical astrology, 13 SEP 1997 falls under Virgo (♍). The sign's window runs from 08-23 through 09-22. Virgo is the largest zodiac constellation, holding the heart of the Virgo galaxy cluster. The Sun was crossing this region of the sky on 13 SEP 1997.
Questions about September 13, 1997
What space photo was released on September 13, 1997?
NASA's Astronomy Picture of the Day for September 13, 1997 was "Kepler Discovers How Planets Move". It's the card at the top of this page.
What was the Moon's phase on September 13, 1997?
A waxing gibbous moon, about 86% lit.
What day of the week was September 13, 1997?
September 13, 1997 was a Saturday, day 256 of the 365 days in 1997.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.