The sky on
your birthday.
TT Cygni: Carbon Star
TT Cygni is a cool red giant star with a strong stellar wind. This false-color image, made with millimeter wavelength radio telescopes, shows radio emission from carbon monoxide molecules in the surrounding gas. Carbon stars like TT Cygni are named for the abundance of carbon in their atmospheres.
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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 18 December 2012 Hubble snaps NGC 5189 See it as a poster -
Released on 18 December 2024 Close look at a local galaxy See it as a poster -
Released on 18 December 2024 NGC 2566 (HST image) See it as a poster -
Released on 18 December 2012 Massive Star Makes Waves See it as a poster -
Released on 18 December 2023 Uranus widefield view (NIRCam) See it as a poster
In tropical astrology, 18 DEC 1998 falls under Sagittarius (♐). The sign's window runs from 11-22 through 12-21. Sagittarius points straight at the center of the Milky Way, our galaxy's brightest region. The Sun was crossing this region of the sky on 18 DEC 1998.
Questions about December 18, 1998
What space photo was released on December 18, 1998?
NASA's Astronomy Picture of the Day for December 18, 1998 was "TT Cygni: Carbon Star". It's the card at the top of this page.
What was the Moon's phase on December 18, 1998?
A new moon, about 0% lit.
What day of the week was December 18, 1998?
December 18, 1998 was a Friday, day 352 of the 365 days in 1998.
Was there a meteor shower on December 18, 1998?
Yes: the Geminid shower, peaked 4 days ago.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.