The sky on
your birthday.
The Matter of the Bullet Cluster
The Bullet Cluster, a massive galaxy cluster known as 1E 0657-558, shows strong evidence for dark matter through gravitational lensing. The way it distorts background galaxies suggests the presence of unseen mass. While some alternative theories propose modifying gravity, the Bullet Cluster's dynamics are currently best explained by the existence of dark matter.
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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 Sun on your day The Sun on 15 January 2017 See it as a poster -
The Earth on your day The Earth on 15 January 2017 · Sahara, Algeria See it as a poster -
Released on 15 January 2023 M1: The Crab Nebula from Hubble See it as a poster -
Released on 15 January 1999 Spiral galaxy NGC 253 See it as a poster -
Released on 15 January 2024 A giant ghostly bird See it as a poster -
Released on 15 January 2014 Wide-field view of the open star cluster Messier 67 See it as a poster -
Released on 15 January 2020 Rosetta view of comet 67P/Churyumov: Gerasimenko See it as a poster
In tropical astrology, 15 JAN 2017 falls under Capricorn (♑). The sign's window runs from 12-22 through 01-19. Capricorn is the dimmest zodiac constellation, but rich in deep-sky objects south of the celestial equator. The Sun was crossing this region of the sky on 15 JAN 2017.
Questions about January 15, 2017
What space photo was released on January 15, 2017?
NASA's Astronomy Picture of the Day for January 15, 2017 was "The Matter of the Bullet Cluster". It's the card at the top of this page.
What was the Moon's phase on January 15, 2017?
A waning gibbous moon, about 93% lit.
What day of the week was January 15, 2017?
January 15, 2017 was a Sunday, day 15 of the 365 days in 2017.
What did the Sun and the Earth look like on January 15, 2017?
NASA's Solar Dynamics Observatory photographed the Sun that day, and NASA's Terra satellite photographed the whole Earth. Both are 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.