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Questions tagged [time]

How passage of time impacts space exploration activities.

3
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2answers
837 views

How to calculate Coordinated Mars Time (MTC)?

I'm trying to figure out how to calculate Coordinated Mars Time (MTC). Can it be calculated directly from Earths current time/date, or calculated from the current Mars Sol Date (MSD)? From this wiki ...
0
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1answer
136 views

What would happen to perceived time in this scenario?

This is difficult for me to explain, but hopefully I can get my question across... Let's say there is a planet called Planet X one million light years from Earth (there probably is). Let's also say ...
11
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3answers
3k views

How much faster (or slower) would it be for a new probe to reach Pluto?

New Horizions just reached Pluto after almost a decade in space. That means it was launched with technology that is well over a decade old (when you factor in planning and construction time). If we ...
23
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3answers
19k views

Determining orbital position at a future point in time

This might come of as a millionth-time award winner beginner question, but since I'm not familiar with either correct terms or designations, I'll put this question in my own language, since I'm not ...
0
votes
1answer
478 views

Considering the relativity of time, how is time experienced in deep space? [closed]

To be more specific, if the relativity of time is governed by the mass and gravity of objects (I.E the satellites orbiting earth experience minor time dilation compared to us on the ground), how is it ...
10
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3answers
1k views

If the Alcubierre Warp Drive was used to travel to Alpha Centauri, how much time would pass on Earth?

If the Alcubierre Warp Drive was used to travel to Alpha Centauri, how much time would pass on Earth? Per this article, it would take merely days to travel there. Say a ship travels there, spends a ...
15
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1answer
377k views

The true meaning of Sol regarding time on Mars

I'm writing a story about Mars and I'm really confused as to how one should use the word 'Sol when talking about the passage of time there. For example, Would one say to a colleague: "Today is Sol 345,...
0
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1answer
202 views

Theoretically, could gravitational time dilation ever be an issue when visiting an alien planet?

If humanity ever got to the point of being able to explore new planets (assuming we could land there), are there any known entities in the universe that are so massive that gravitational time dilation ...
8
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2answers
11k views

Would a Moon resident age differently than someone living on Earth?

Say there were a base on the Moon with people living/studying there. Would they age differently than those on earth due to a change in speed through space? Does the Moon move faster through space (...
6
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1answer
173 views

What time of events is given for probes a long way away from Earth?

Philae is to land on 67P/Churyumov-Gerasimenko today at 17:02 CET. The comet is currently 3.409AU away from Earth. That means signals from the lander take a little over 28 minutes to reach Earth. Does ...
11
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4answers
2k views

Has an interplanetary date/time system been established yet?

Obviously, with no humans living permanently off-planet yet, Earth-style dates and times are the most common system is use, and reasonably so. And it helps that Mars's day is almost the same length ...
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5answers
40k views

How does GPS receiver synchronize time with GPS satellites?

GPS satellites transmit time values regularly, but if we put in consideration the time delay between the satellite and the receiver, the time value received wouldn't be accurate insofar as I know GPS ...
0
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1answer
577 views

how much does time slow down with gravitational time dilation, on a black hole with these graph trajectories.? [closed]

How much does time slow down with gravitational time dilation, on a black hole with these graph trajectories.? If you watch a journey into a black hole on Youtube before reading this question, it ...
14
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3answers
426 views

How would time measurement be done over great distances?

Already on earth the time is a bit of a problem with the time-zones. It is not that big a problem though, since we all "travel" at (nearly) the same speed. Not so in space. With the time dilatation (...
8
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3answers
2k views

How would we communicate over light years?

Anyone who has been in an email conversation where the chain split into different threads, or has been in chat where they receive two diverging comments requiring a response before a reply to the ...
11
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3answers
797 views

Day versus night launches

Most launches that I've seen have occurred during the day. But I've also seen a couple of missions that have been launched at night. Are there any specific advantages or disadvantages to a day launch ...
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2answers
2k views

Do the Voyager space probes perform time synchronization regularly?

According to JPL: http://voyager.jpl.nasa.gov/mission/weekly-reports/ Voyager 1 travels at a velocity relative to the Sun of 19.03 km/s (or 0.000063478 c, or a time difference of ~ 0.0005 seconds per ...
27
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4answers
16k views

What time zone is used on ISS to define a day?

What time zone is used on ISS to define when a day starts? Is it the same as mission control? Do Russian cosmonauts use a different time zone respect to European and American astronauts?