Last year in 2016, ISRO (Indian Space Research Organization) launched the final satellite, IRNSS-1G, to complete the constellation of seven satellites. This constellation of satellites will enable India to have its very own indigenous navigation satellite system with an operational name NaVIC. NaVIC will be fully operational by early 2018.
Yes, it is safe to swim while you on periods. Period blood doesn't flow outside the vagina like it usually does due to the counter-pressure of the water. But You still need to wear some a tampon or a menstrual cup to avoid getting into a sticky situation.
Resin tooth filling typically contains a filler particle such as quartz, which provides the mixture's strength and color. It is costly as compared to silver tooth filling.
In some cases, the change in period blood color can indicate a health problem like fibroids, low estrogen levels, and even vaginosis.