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Astronomy : Recent Questions and Answers (Page 2)

Find answers to your questions about Astronomy or help others by answering their Astronomy questions.

Ecliptic coordinate ranges in radians

In ecliptic coordinates, what are the ranges of ecliptic longitude and latitude in radians? Do they both go from $-pi$ to $pi$?...

Asked on 12/16/2021 by user23921

2 answer

Is there evidence for galactic "seasons"?

The Solar Year has huge effects on our climate, and the signs of passing seasons are physically evident on Earth. I recently learned about the Galactic Year. To my understanding,...

Asked on 12/16/2021

1 answer

Re-align HST narrowband images to GOODS-S

I want to re-align the image data of filter F658N to GOODS-South catalog with TweakReg. I used the external catalog of image data generated by SExtractor as input catalog (threshold...

Asked on 12/14/2021 by ourdays

0 answer

Is there a connection between the solar wind and the cosmic radiation?

Cosmic radiation consists of high-energetic particles, mostly protons, that come amongst others from supernovae and our sun, right? The solar wind also consists of charged particles, like protons and electrons,...

Asked on 12/09/2021

2 answer

Has THC been detected in space?

I was wondering if and how astronomers have/had detected the molecule Tetrahydrocannabinol (THC), commonly known for it's effects in marijuana, in space. I had previously seen a hoax regarding the...

Asked on 12/07/2021 by Pulchritude

1 answer

Is or might there be lightning on Io?

As far as we know, Jupiter's moon Io has the most volcanic activity of any known celestial body. It has the most volcanoes that are active and they're erupting frequently....

Asked on 12/07/2021

1 answer

How to determine arrival time delay given dispersion measure?

In an online textbook, the following formula is given to calculate the arrival time delay between two frequencies, $v_1, v_2$ in a dispersed radio pulse: $$t_1 - t_2...

Asked on 12/07/2021

1 answer

How can I crop a fits file and get correct WCS header info without a new plate solve and WITHOUT USING PYTHON?

While my question is similar to this one, the suggestions offered there won't work for my specific situation. For over a month I've been trying to find software...

Asked on 12/04/2021 by AstroShannon

1 answer

Why are Mars northern/southern hemisphere altitudes so different?

I'm looking at the Mars topography map:original link ...and I can't shake the impression that someone just messed up...

Asked on 11/27/2021

2 answer

Two luminous points disappearing in the sky

I saw a few days ago two luminous points in the sky, which were quite close (about 1-2 degree of separation between them) and not apparently moving (or to slow...

Asked on 11/27/2021 by Lexi Jones

2 answer

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