The First Trimester Screen is a new, optional non-invasive evaluation that combines a maternal blood screening test with an ultrasound evaluation of the fetus to identify risk for specific chromosomal abnormalities, including Down Syndrome Trisomy-21 and Trisomy-18.
According to NASA, the next total lunar eclipse will be on January 31, 2018, and will be seen in Asia, Australia and North America. Penumbral lunar eclipses will occur on March 23, 2016, September 16, 2016, and February 11, 2017. Penumbral eclipses are more difficult to observe because only part of the moon is eclipsed.
The next total solar eclipse visible from the mainland U.S. will be on August 21, 2017. The next total solar eclipse visible in the mainland United States will come on August 21, 2017. The next total eclipse after that for U.S. observers will be on April 8, 2024. Image Credit: NASA Eclipse Web Site.