Search found 4 matches

by Mike Herman
Sun Feb 05, 2017 6:12 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Galaxy distribution
Replies: 2
Views: 1393

Galaxy distribution

I haven't been able to find an answer, so need some guidance. As distance from the observer increases, the surface area of a sphere around the observer increases. A smooth distribution of objects would mean that a count of those objects would increase as the square of their distance. Thus my questio...
by Mike Herman
Tue Mar 24, 2015 4:14 am
Forum: The Library: Information Desk and Educational Resources
Topic: Gravity Waves
Replies: 4
Views: 37862

Re: Gravity Waves

Thanks. My confusion is based on the interpretation of expanding space as causing the "stretching" of the CBR wavelength over time. If expanding space can stretch wavelength, I assumed a gravity (gravitational?) wave might do the same thing. If so, that could "hide" the varying d...
by Mike Herman
Sat Mar 21, 2015 5:51 am
Forum: The Library: Information Desk and Educational Resources
Topic: Gravity Waves
Replies: 4
Views: 37862

Gravity Waves

Gravity wave interferometers are built to detect tiny distance changes between mirrors. Is this because it would take light more time to travel between them if the distance increases, or because the total number of wavelengths of light between them would change, with a passing gravity wave? I ask be...