Astronomy Picture of the Day ·

A Sundial for Mars

The Astronomy Picture of the Day for April 28, 1999 is “A Sundial for Mars,” an image. It is credited to Credit: W. Sullivan (U. Washington) et al., Mars Surveyor 2001, NASA. The original explanation runs about 112 words.

A Sundial for Mars
Credit: W. Sullivan (U. Washington) et al., Mars Surveyor 2001, NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“When Mars Surveyor arrives at Mars in 2002, it will carry a sundial. Even though batteries and a solar array will power the Mars Surveyor Lander , the sundial has been included to allow a prominent public display of time.”

— APOD editors, April 28, 1999

Read the full explanation on science.nasa.gov

At a glance

Date
April 28, 1999
Type
Image
Credit
Credit: W. Sullivan (U. Washington) et al., Mars Surveyor 2001, NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 112 words

All of April 1999 → · 1999 by month → · Full archive since 1995 →

Topics in this entry

Mars

Topics are matched from words in the title and explanation.

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Source

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.