The sky on
your birthday.
The Sudbury Neutrino Detector
The Sudbury Neutrino Detector is an underground observatory designed to detect neutrinos, tiny particles produced by the Sun and other cosmic sources. Located over a mile beneath the Earth's surface in a former nickel mine, it helps scientists understand the Sun's interior and fundamental particle physics. The detector uses a large sphere filled with heavy water, which allows it to observe different types of neutrinos.
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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 23 June 2009 Molecular Cloud Barnard 68 See it as a poster -
Released on 23 June 2026 Messier 82 (Hubble 2006 image) See it as a poster -
Released on 23 June 2026 M82 (Webb NIRCam image) See it as a poster -
Released on 23 June 2026 Galaxy field of MXDFz4.4 (Hubble and Webb clean image) See it as a poster -
Released on 23 June 2026 The Cigar Galaxy: M82 (Webb and Hubble image) See it as a poster
In tropical astrology, 23 JUN 1999 falls under Cancer (♋). The sign's window runs from 06-21 through 07-22. Cancer is marked by the Beehive Cluster, M44, a loose family of stars visible to the naked eye on a dark night. The Sun was crossing this region of the sky on 23 JUN 1999.
Questions about June 23, 1999
What space photo was released on June 23, 1999?
NASA's Astronomy Picture of the Day for June 23, 1999 was "The Sudbury Neutrino Detector". It's the card at the top of this page.
What was the Moon's phase on June 23, 1999?
A waxing gibbous moon, about 71% lit.
What day of the week was June 23, 1999?
June 23, 1999 was a Wednesday, day 174 of the 365 days in 1999.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.