905 reputation
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location Santa Ana, CA
age 54
visits member for 4 months
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1d
reviewed Reopen What is the secret behind the existence of gravitational force?
1d
reviewed Close What type of energy is escaping from black-hole's poles?
1d
comment Why aren't there galaxy-sized balls of iron out there?
@HDE226868 I knew that. I just didn't want to take the time to look up the correct amounts.
1d
reviewed No Action Needed How was an infrared picture of the entire universe taken?
1d
answered Why aren't there galaxy-sized balls of iron out there?
Aug
17
comment Original Hubble diagram units incorrect?
The paper indicates that it should be km/s. Maybe the creator of the graph was not awake when it was made.
Aug
15
reviewed Leave Open Infinite universe? How?
Aug
15
reviewed No Action Needed What is star composition after formation
Aug
15
reviewed No Action Needed Infinite universe? How?
Aug
15
reviewed Reviewed Starting out in practical astronomy
Aug
14
reviewed No Action Needed Telescope on polluted environment
Aug
14
reviewed No Action Needed Infinite universe? How?
Aug
13
answered How to polar align an equatorial mounted telescope when you are close to the equator?
Aug
13
reviewed No Action Needed How to polar align an equatorial mounted telescope when you are close to the equator?
Aug
13
reviewed No Action Needed Derivation of the formula for longitude of ascending node for a satellite
Aug
13
reviewed No Action Needed Data for red-shifting
Aug
12
comment fit sine wave to data
If your data covers 1/4 of the period, you should be able to determine the phase fairly easily. Unless you collect data within 20° of the peak, it would be difficult to calculate the amplitude.
Aug
12
reviewed No Action Needed Is a white dwarf hotter than a Red Giant?
Aug
12
reviewed No Action Needed Why do astronomers like Green Laser Pointers?
Aug
12
reviewed No Action Needed Do we expect life to develop only in certain regions of the galaxy?