1,679 reputation
217
bio website
location Scandinavia
age
visits member for 10 months
seen 9 hours ago

Android java developer newbie who tries to be as "agile" about it as I read be the current fashion.

I'm also interested in low level (c, assembler) programming of MCU IC's. Especially radio related (such as zigbee and low energy bluetooth).


2d
awarded  Nice Answer
2d
awarded  Nice Question
2d
answered Does the Earth have another moon?
Dec
15
comment Does planets repel
This was actually considered by Johannes Kepler around year 1600, before gravity was considered. Magnetic poles of the Sun and the planets would explain the elliptic shape of their orbit, attracting and repelling each other along the orbit. He didn't manage to make that add up, though.
Dec
15
accepted How often do stars pass close (~1ly) to the Sun?
Dec
12
asked How does radio bandwidth restrict the choice and use of science payload on interplanetary probes?
Dec
9
comment Do Pluto and Charon have unusual Langrange points?
More important to the stability of their L-points should be that Charons orbit is very circular, has very low eccentricity. (But me and orbital mechanics don't understand each other, I don't dear make in an answer.)
Dec
8
answered Why is there a black stripe in the Hubble images of Pluto?
Dec
8
comment Could a space radio telescope fill multiple purposes?
Okay, that's something. Maybe it could be used as a huge frying pan too ;-) Btw, I never understood why screens in cinemas, TV's and phones are square. Wouldn't round screens be preferable since our field of view is more roundish? Or does the two eyes make it more rectangular after all? Even then, at least oval screens should be a good idea.
Dec
6
comment How should one rationally deal with the issue of space travelling alien civilizations?
@Wayfaring Stranger Great article! But I don't think that space travelling civilizations are planet bound. By building a space station one has total control of all conditions such as gravity, atmosphere, biomes and gets rid of natural disasters like volcanoes, hurricanes, solar eruptions. And once one goes interstellar, one goes everywhere, within a small fraction of galactic history, and becomes impossible to extinct. If it hasn't happened, then we will be the first, and that's weird.
Dec
5
comment How should one rationally deal with the issue of space travelling alien civilizations?
Can't we at least formulate the possible alternatives? And if all of them seem unreasonable (which they do to me), then we at least learn that we have some more work to do. And might solve the problem intellectually, because at least one possible alternative must be apparent if one thinks clearly, right? Or is there an end to thought?
Dec
5
comment How should one rationally deal with the issue of space travelling alien civilizations?
Yeah, Fermi's paradox opened the Pandora box. So my question is basically how can we put the lid on it again. Your many suggestions seem to either suggest that they are everywhere, or that we are unique. But is it really rational to assume that they for example "deliberately avoid us"? Do we deliberately avoid ants? Why would they? And are we unique, really why, God? My question is how we could deal with this apparent paradox in a rational scientific way. Are we alone or blind or something else?
Dec
5
comment How should one rationally deal with the issue of space travelling alien civilizations?
@WayfaringStranger But if we are talking about space travelling aliens, then whatever could possibly wipe them out? Once you go interstellar, you become immortal and eternal. That's actually the scary part here. If anyone did that anywhere anytime, then they are for ever everywhere always. Much like some virus inside us here on Earth.
Dec
5
comment How should one rationally deal with the issue of space travelling alien civilizations?
@WayfaringStranger Even during the second world war when idiots did their utmost to murder human beings, even with nuclear weapons. Even then the population actually grew! I don't believe that self-destructive doomsday argument. Humanity in fact advances relentlessly under all conditions.
Dec
5
revised How should one rationally deal with the issue of space travelling alien civilizations?
added 8 characters in body
Dec
5
asked How should one rationally deal with the issue of space travelling alien civilizations?
Dec
4
comment Could supermassive black holes form in dwarf galaxies?
A fair portion of the galactic mass? Rather more like 1/100000 of the galactic mass.
Dec
3
comment Why can I see the whole moon during various non-full-moon phases?
@Evert Yes, but it is probably one of those very understandable "what word should I google"-cases. It is difficult today to find information about any what's-its-name topic. EDIT: Ah, damn, he does mention the keyword "earthshine", ouch...
Dec
3
answered Why can I see the whole moon during various non-full-moon phases?
Dec
3
comment Can you see man-made lights on the dark side of the Earth from the surface of the moon with the naked eye?
@Nate Eldredge 6.0 is about the magnitude of Uranus. It is barely visible to the naked eye in good conditions. The ancients could've discovered it as a planet before the telescope was invented, but it also moves quite slowly across the sky. Not even Tycho Brahe noticed it.