The sky on
your birthday.
M82: Starburst In X-rays
M82 is a starburst galaxy, forming stars ten times faster than the Milky Way. Winds from massive stars and supernova explosions have created the million-degree gas cloud seen here by the Chandra X-ray Observatory. The false-color image shows bright spots, likely supernova remnants and X-ray bright binary stars. This intense activity drives a galactic superwind.
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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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The Earth on your day The Earth on 21 April 2000 · Italy and the Adriatic See it as a poster -
Released on 21 April 2010 VISTA’s infrared view of the Cat’s Paw Nebula* See it as a poster -
Released on 21 April 2010 Highlights from VISTA’s infrared view of the Cat’s Paw Nebula See it as a poster -
Released on 21 April 2025 A glittering cluster shines again See it as a poster -
Released on 21 April 2016 The Bubble Nebula See it as a poster -
Released on 21 April 2016 Wide-field image of the Bubble Nebula (ground-based image) See it as a poster
In tropical astrology, 21 APR 2000 falls under Taurus (♉). The sign's window runs from 04-20 through 05-20. Taurus holds the Pleiades star cluster and Aldebaran, the red giant that marks the eye of the Bull. The Sun was crossing this region of the sky on 21 APR 2000.
Questions about April 21, 2000
What space photo was released on April 21, 2000?
NASA's Astronomy Picture of the Day for April 21, 2000 was "M82: Starburst In X-rays". It's the card at the top of this page.
What was the Moon's phase on April 21, 2000?
A waning gibbous moon, about 94% lit.
What day of the week was April 21, 2000?
April 21, 2000 was a Friday, day 112 of the 366 days in 2000.
Was there a meteor shower on April 21, 2000?
Yes: the Lyrid shower, peaks tomorrow.
What did the Sun and the Earth look like on April 21, 2000?
NASA's Terra satellite photographed the whole Earth that day. It's on this page, next to the card.
Is it free?
Yes. Seeing, sharing and downloading the card is free, and there's no account to make.