2,167 reputation
320
bio website gplus.to/fivey
location Christchurch, New Zealand
age 41
visits member for 1 year, 2 months
seen 17 hours ago

I'm a wannabe amateur astronomer making do with satisfying my urge by taking astrosolar photographs in white light with available equipment.


Dec
15
awarded  Quorum
Dec
14
comment Could a theoretical cube shaped planet have a moon?
I'm providing an answer, but we'll see what other group members think... This feels to me to be off-topic for anstronomy. It is a theoretical question for a fictional concept, the physics of which might be better asked at Physics, the spacecraft design aspects at Space Exploration.
Nov
25
comment moonless night and lunar phase
@dotancohen perhaps you should edit your answer to clarify because right now, someone who didn't already know the answer might misunderstand. As it is, I first read your answer as suggesting just one night per month as moonless. That is clearly not the case, and it indeed is not what you intend to say. Perhaps modify to say that during the period of the month that the moon is near the sun, nights will be moonless, and there may be three such consecutive nights in a lunar month.
Nov
24
comment moonless night and lunar phase
When you say 'once per month' you don't meant to suggest there is only one moonless night per month, right?
Nov
23
comment Yellow object between δ Ori and η Ori
You should get yourself a good planetarium app like a stellarium, The SkyX, or Sky Safari
Oct
24
awarded  Precognitive
Oct
18
comment How do we know that the speed of the influence of gravity is instant?
@Supuhstar you could be a bit more helpful and instructive to help a new user make better answers instead of being dismissive. I note you are fairly new yourself. As a counterpoint, your question was not a 'good' question, in that it showed little prior research, and asked about a personal understanding that wasn't correct. Please check the FAQS for how to ask good questions.
Oct
17
awarded  Revival
Oct
17
comment How much would you weigh if Earth stopped orbiting the Sun?
I think this question falls squarely in the category of hypothetical questions that are in the 'don't ask' category, and I am flagging it for moderator review. astronomy.stackexchange.com/help/dont-ask
Oct
17
comment What is the bluest narrow band filter mounted on ground based telescopes?
The issue doesn't appear to be whether a filter could be made, they don't seem to exist off the shelf because there is no point, as the atmosphere doesn't permit observations at the desired frequency
Oct
16
comment How much would you weigh if Earth stopped orbiting the Sun?
@Err I think this answers your question well, addressing you misconceptions about weightlessness in gravitational freefall.
Oct
15
comment How can a planet not rotate at all and yet have 1 year that is day and 1 year that is night?
@Scottie a tidally locked planet doesn't have (solar) days (and nights). But though it might be news to you, Mercury is not tidally locked, and this is old news. See my answer.
Oct
15
revised What is the difference between Sphere of Influence and Hill sphere?
added 26 characters in body
Oct
15
comment How can a planet not rotate at all and yet have 1 year that is day and 1 year that is night?
I've added sketches to help explain how it works
Oct
15
revised How can a planet not rotate at all and yet have 1 year that is day and 1 year that is night?
added graphics
Oct
14
comment How can a planet not rotate at all and yet have 1 year that is day and 1 year that is night?
...and the question is essentially asking about sidereal days on Mercury, not solar days on exoplanets.
Oct
14
answered What is the difference between Sphere of Influence and Hill sphere?
Oct
14
answered How can a planet not rotate at all and yet have 1 year that is day and 1 year that is night?
Oct
13
answered Why does iron consume more energy in the fusion process than it produces?
Sep
30
awarded  Explainer