Astronomy Picture of the Day ·

Magnetic Mars

The Astronomy Picture of the Day for May 4, 1999 is “Magnetic Mars,” an image. It is credited to Credit: Jack Connerney, Mario Acuna, Carol Ladd, MGS, NASA. The original explanation runs about 182 words.

Magnetic Mars
Credit: Jack Connerney, Mario Acuna, Carol Ladd, MGS, NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Mapping Mars from orbit, instruments on the Mars Global Surveyor (MGS) spacecraft have recently revealed banded magnetic field patterns – a startling and unanticipated suggestion that the Red Planet was more Earth-like in its distant past.”

— APOD editors, May 4, 1999

Read the full explanation on science.nasa.gov

At a glance

Date
May 4, 1999
Type
Image
Credit
Credit: Jack Connerney, Mario Acuna, Carol Ladd, MGS, NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 182 words

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

Topics in this entry

Mars

Topics are matched from words in the title and explanation.

On this day: May 4 in other years

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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.