| | July 9 Saturn! Plus A New Theory of Gravity | | | |
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| | As seen from Earth, the north face of Saturn's rings opened up most widely (27 degrees) in 2017. Now we're past the peak of the north ring-face opening, but Saturn’s rings are still fairly inclined, and still showing us their northern face. By the year 2025, the rings will appear edge-on as seen from Earth. Image via Hubble Heritage. | | |
| | | Success with a new theory of gravity | | Don't miss this exciting story about supercomputer simulations of galaxies, showing that Einstein’s general theory of relativity might not be the only way to explain how gravity works or how galaxies form. Read more. | | | | | |
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| | | Tonight … Moon and Spica | Look closely at the moon tonight, and you'll notice the star Spica in its glare. Read more. | | | | |
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| | We go between Saturn and the sun | Saturn's opposition comes today at 17:00 UTC; translate UTC to your time. Illustration above via NASA; not to scale. Read more. | | |