The sky on
your birthday.
Rumors of a Dark Universe
Twenty-one years ago, observations of distant supernovae indicated that most of the universe's energy is tied to space itself, a concept called dark energy. This large cosmological constant was not new to relativistic cosmology, but it had not been popular with astronomers. This finding implied an accelerating expansion of the universe.
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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 4 August 2019 See it as a poster -
The Earth on your day The Earth on 4 August 2019 · Great Lakes See it as a poster -
Released on 4 August 2014 IC 4499: A globular cluster’s age revisited See it as a poster -
Released on 4 August 2005 Hubble Spies a Zoo of Galaxies See it as a poster -
Released on 4 August 2025 A sea monster and a Tarantula See it as a poster -
Released on 4 August 2021 EHT Resolves Central Jet from Black Hole in Cen A See it as a poster -
Released on 4 August 2019 The Milky Way lights up an orbital night pass as the International Space Station orbited 257 miles above the Coral Sea See it as a poster
In tropical astrology, 4 AUG 2019 falls under Leo (♌). The sign's window runs from 07-23 through 08-22. Leo is anchored by Regulus, the heart of the Lion, twenty-four parsecs from Earth. The Sun was crossing this region of the sky on 4 AUG 2019.
Questions about August 4, 2019
What space photo was released on August 4, 2019?
NASA's Astronomy Picture of the Day for August 4, 2019 was "Rumors of a Dark Universe". It's the card at the top of this page.
What was the Moon's phase on August 4, 2019?
A waxing crescent moon, about 12% lit.
What day of the week was August 4, 2019?
August 4, 2019 was a Sunday, day 216 of the 365 days in 2019.
What did the Sun and the Earth look like on August 4, 2019?
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.