Miscarriage Bleeding. How long do you bleed after a miscarriage? It is normal to bleed for up to two weeks after your miscarriage has occurred. This bleeding may be a steady flow, or may take a stop and start pattern, where you do not bleed for a day or two and then begin again. If your bleeding is very heavy after 2-3 days, please contact your doctor as you may have some retained tissue that is causing the heavy bleeding. When can you expect your next period after miscarriage? You can expect your period to return in about 4-6 weeks after the loss of your baby.
Survival in Space Unprotected Is Possible--Briefly. But don't linger in the interstellar vacuum, or hold your breath. By Anna Gosline | February 14, 2008. NASA. As far as certain death in a science fiction plot line goes, being ejected into the vacuum of space is more than a pretty sure thing.he lack of oxygen to the brain renders you unconscious in less than 15 seconds, eventually killing you. When the pressure gets very low there is just not enough oxygen. That is really the first and most important concern, Buckey says.
To explore and work in space, human beings must take their environment with them because there is no atmospheric pressure and no oxygen to sustain life. Inside the spacecraft, the atmosphere can be controlled so that special clothing isn't needed, but when outside, humans need the protection of a spacesuit. Earth's atmosphere is 20 percent oxygen and 80 percent nitrogen from sea level to about 75 miles up, where space begins. At 18,000 feet, the atmosphere is half as dense as it is on the ground, and at altitudes above 40/000 feet, air is so thin and the amount of oxygen so small that pressure oxygen masks no longer do the job.