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Questions tagged [identify-this-object]

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-5
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1answer
193 views

What is this elliptical orbit?

Most natural elliptical orbits are one sided as shown below from wiki. What is an elliptical orbit where perigee and apogee are closer to being equal in distance than not? I have learned that this ...
4
votes
4answers
114 views

How to figure out what something in the sky is?

A while ago I saw something in the sky early in the evening. At first, I thought it was a plane since it seemed far too bright to be a star - no other stars could be seen. However, it didn't move, so ...
0
votes
1answer
52 views

Planet with acid ice caps

I remember reading an old astronomy book mentioning a certain planet and the main point of interest was that this planet has or may have polar ice caps but of acid. I can't remember the name though, ...
6
votes
2answers
569 views

Which telescopes model is being shown to Albert Einstein in this file footage? What event might this be?

In the Economist video Why does time pass? there is some file footage of Albert Einstein attending some event where a model of a large telescope is on display, and being described to Prof. Einstein. ...
2
votes
1answer
66 views

What bright body is next to the Moon in these photos of the ISS transiting the lunar disk?

The question What are the chances that the ISS transits the moon as seen from your house (or headquarters)? links to the SpaceX Instagram-posted photos of the ISS transiting the Moon's disk as seen ...