December 18, 2017

Astro-Event: A Spectacular Dawn Appulse.

Venus versus Regulus: the view on October 3rd.

(All simulations created by the Author in Starry Night).

Itís a question we have posed before, worthy of a sequel to Arthur Upgreen’s alternate astronomy book Many Skies; what would Venus look like if it had a moon? As a kid, I remember a science book on the solar system looking back at the Earth-Moon system from Venus, assuming that you could get above the cloud tops. At greatest elongation, Earthís Moon would be 9í arc minutes from the planetís -3.6 magnitude disk this month and would itself shine at +0.5 magnitudeÖ what a view that would be! [Read more...]

Review: Many Skies by Arthur Upgren

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Itís a question we all find ourselves asking on occasion. What would our skies look like if things were a little bit different? Itís a fun thought experiment to play; add a Moon here or a Sun there and see what happens. While the night sky may be beautiful, itís somewhat of a cruel joke that we live out our earthbound existence from but a single vantage point. Perhaps this mediocre position in time and space is why weíre here at all; having lots of active and exotic objects nearby such as supernovae and black holes may not bode well for life. [Read more...]