The smiley face captured by the ExoMars Trace Gas Orbiter is more than just a quirky image; it represents a crucial clue in the ongoing search for life on Mars.

Newly released images of Mars reveal a "smiley" salt deposit on the Red Planet's surface. A related study suggests that similar deposits, which were left behind from ancient lakes, may be a good ...

The moon, Saturn and Venus will create a rare smiley face in the sky later this week. Sometimes things line up in fun ways. That is set to happen early Friday morning in the night sky as the moon ...

The dark spots that looked like a smiley face on the sun caused by some surfaces of the sun being a different temperature and could disrupt telecommunications.

A triple conjunction, appearing to some as a smiley face, will be visible in the early morning sky on April 25 in Michigan. Here's what to know.

Share or comment on this article: Extraterrestrial emoji! A 'smiley face' will form in the night sky this evening - here's how to spot the rare display ...

Challenge your observation skills with an optical illusion that hides a smiley face among a treasure box, a magic lamp, and an hourglass. Test your at ...

To spot the celestial 'smiley face,' skywatchers in the U.S. will need a clear view of the eastern horizon in the hour leading up to sunrise on April 25.

Newly released images of Mars reveal a "smiley" salt deposit on the Red Planet's surface. A related study suggests that similar deposits, which were left behind from ancient lakes, may be a good ...