It would depend on how big the nearby star was, and how far away it was. There are no really large stars that are nearby, nor are there any stars that are particularly close to us. The closest stars are in the Alpha Centauri group, 4+ LY away.
If a medium size star about 50 LY away were to go nova, it would be like another Venus or Jupiter in the night sky; impressive, but not dangerous. If a large star within 15 LY or so were to go supernova (and there are no stars so close that COULD become supernova), it would be like a second Sun; the radiation would be dangerous for a while, but would fade within a few months or so.
This isn't something that we need to worry much about.
Mars.
day and night
The length of the day
The earth has arranged to revolve around the sun once a year and rotate on its axis once a day.
If you are at exactly the north or south pole the measurement is in Revolutions per Day And that speed is 1 Revolution Per Day.
The entire length of Nova Scotia can be driven easily in a day. NS is not an island,, could be driven in 10-12 hrs.
Yes. We could write a lot more, but yes is the answer.
Yes - our sun will one day die. Due to it's small size, instead of going super nova, the outer layers will shred away and it will shrink into a white dwarf.
earths rotation
Mars.
1867 Canada day
24 hours.
all gear ratios were available back in the day but most nova's came with a 3.08 gear.
Because the earths magnetic poles move around from year to year, and even day to day.
There is no point on the earths surface that experiences night for 24 hours every day.
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the earths rotation