Astronomy
DJohnM's user avatar
DJohnM's user avatar
DJohnM's user avatar
DJohnM
  • Member for 9 years, 4 months
  • Last seen this week
  • Toronto, Canada
Profile Activity
Stats
1,021
reputation
70k
reached
15
answers
0
questions
Communities
View all
About

Retired community college professor

Badges
View all badges
This user doesn’t have any gold badges yet.
5
silver badges
7
bronze badges
Top tags
View all tags
28
Score
3
Posts
20
Posts %
18
Score
1
Posts
7
Posts %
9
Score
2
Posts
13
Posts %
9
Score
1
Posts
7
Posts %
8
Score
2
Posts
13
Posts %
8
Score
1
Posts
7
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
answer
18
Could mirrors be replaced with CCDs?
Mar 30, 2016
answer
9
What's the likelihood of the existence of unknown elements in the Solar System?
Jun 28, 2014
answer
8
What was the largest telescope ever fitted with an eyepiece
Nov 28, 2015
answer
7
In zero gravity - I'm floating inside a torus as they spin it up, do I float do the "ground"?
Jan 31, 2017
answer
7
What would the effects be on Earth if Jupiter was turned into a star?
Aug 6, 2014
answer
6
Does Doppler shift affect apparent pulsar frequency?
Apr 29, 2014
answer
4
How would I measure that I'm at a pole?
Nov 20, 2013
answer
4
Why do we only have one major meteor shower from 3200 Phaethon?
Dec 14, 2020
answer
3
Why does e.g. Hubble's secondary mirror not block part of the picture?
Feb 24, 2014
answer
2
Is there an oxide layer on aluminum reflectors for telescopes?
Feb 7, 2014
Top network posts
View all network posts
146
How do grandfather clocks keep going?
113
What would prevent me from taking advantage of scammers?
51
Why does this movie say a witness can't present a jury with testimony which would assist in making a determination of guilt or innocence?
51
Conservation of momentum when rain pours into a wagon
50
If you have a home mortgage, why do you still have to pay all of the property tax?

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.