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 Chinese Changâe 5 test vehicle captured this extraordinary view of Earth over the far side of the moon on October 28, 2014. From Earth on this date, the phase of the moon was a waxing crescent. From the moon that day, the Earth was in a waning gibbous phase. Mare Moscoviense â one of the very few lunar maria on the lunar far side, 277 kilometers / 127 miles wide â is visible in the image near the center of the lunar far side. Tsiolkovskiy Crater with its dark lava flooded floor â 180 kilometers / 112 miles wide â is visible to the lower left on the far side of the moon. The Chinese Changâe 5 spacecraft, which is testing lunar sample return technology, has rounded the lunar far side and is now on the return leg of its journey to the moon.