Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 340370

The science dealing with objects and phenomena located beyond Earth. In particular, this applies to observations and data. At its core, astronomy is the physically informed cataloging and classifying of the contents of the universe in order to better understand what is out there.

0 votes
0 answers
68 views

How is Starlight Reflected by Mirrors?

The chosen star is on the Z-axis of Mirror-A (Red). The Star image appears on the face of this Mirror at the Origin of the CoSys. Starlight Rays (Yellow lines) remain parallel, and do not diverge wit …
0 votes
1 answer
66 views

Project Apollo Sextant Beam Splitter - How did it work?

MIT's Role in Project Apollo Volume 2 Optical Subsystem Apollo Sextant Beam Splitter For onboard navigation to and from the Moon, a sextant was used by Apollo astronauts to measure the angle between …