To return to the subject of how orbits appear when plotted geocentrically (that is, with the Earth stationary).
Blog
Nasty Constellations
Slug, Toad, Leech, Spider, Earthworm – these were some of the thirteen constellations Continue reading “Nasty Constellations”
Earth-Centered Swirlings
Mars continues its high season of observability, indeed is still coming slightly nearer than it was at opposition a few days ago, as well as being free of the Full Moon’s glare. Continue reading “Earth-Centered Swirlings”
An Aristeia of Mars
Get ready for the opposition of Mars on Sunday May 22, and even better later.
Astronomy Day
It’s Spring Astronomy Day, and this is the sky scene that should greet you as evening falls.
Tocra Pass
I was wondering when someone would ask me what that picture is, Continue reading “Tocra Pass”
Tails in the Sky
Fred Schaaf in his Sky & Telescope column for this month looks back fondly on the great comet tails that graced the May sky 33 and 30 years ago – Iras-Araki-Alcock and Halley – and then points out Continue reading “Tails in the Sky”
Vikings come raiding again
The boom of a cannon shook my window Continue reading “Vikings come raiding again”
Link to the Transit of Mercury
On Monday May 9 comes the passage of the pinpoint black planet (here shown 5 times larger than scale) across the vast boiling face of the Sun.
May Day
The London Marathon, and then May Day. In the big city, it’s certainly easier to be at happenings.
We decided to get to the great rally, Continue reading “May Day”