The Whole of the Moon


These images show Mercury and the nearside of the Moon at their correct relative brightness. On average, the surface of Mercury is about 15% darker at visible wavelengths than is the nearside of the Moon. This is perplexing to planetary scientists because Mercury's surface is lower in iron, the element in lunar rocks that contributes most to absorbing light. MESSENGER observations will help to solve this puzzle.

Comments

Post a Comment

Popular posts from this blog

NASA Readies New Type of Earth-Observing Satellite for Launch

Image
NASA is planning an Oct. 27 launch of the first Earth-observing satellite to measure both global climate changes and key weather variables. The National Polar-orbiting Operational Environmental Satellite System Preparatory Project (NPP) is the first mission designed to collect critical data to improve weather forecasts in the short-term and increase our understanding of long-term climate change. NPP continues observations of Earth from space that NASA has pioneered for more than 40 years. NPP's five science instruments, including four new state-of-the-art sensors, will provide scientists with data to extend more than 30 key long-term datasets. These records, which range from the ozone layer and land cover to atmospheric temperatures and ice cover, are critical for global change science. "NPP's observations of a wide range of interconnected Earth properties and processes will give us the big picture of how our planet changes," said Jim
Read more
Hotel Good Quality Hall and Dining Room Wooden Folding Doors SoundproofRoomDividers, is located in Guangzhou, China (hereinafter called our company) is a professional manufacturer of  sound proof room dividers  and folding soundproof room dividers. Our business philosophy is to provide our customers with more and better equipment with easily and stable operation, by our continuously research, development and renovation. Hotel Gooden Quality Hall and Dining Room Wood Foldable Door 1.Made from Recycled raw materials 2.Excellent sound absorption 3.Test Reports available on request 4.Fireproof finish available The new series of machine and equipments feature high efficiency, advanced technology, stable capability and wide applicability. To become the preferred supplier of  hanging room divider  and soundproof room divider products to businesses and end users, by combining tried-and-trusted methods with innovative and progressive ideas, we always trying to generate comfortable surround
Read more

Cosmic crashes forge gold

Image
Various stages of the merger of two neutron stars are shown in this simulation sequence; the images cover a period of about one-hundredth of a second. Once the stars collide, material is squeezed out between the stars and gets stripped off from tidal tails. In the material ejected, a multitude of nuclear reactions takes place, producing heavy elements. Photo by S. Goriely, A. Bauswein, and H.-T. Janka (MPA) The cosmic site where the heaviest chemical elements such as lead or gold are formed has likely been identified: Ejected matter from neutron stars merging in a violent collision provides ideal conditions. In detailed numerical simulations, scientists of the Max Planck Institute for Astrophysics (MPA) in Garching, Germany, and affiliated to the Excellence Cluster Universe and of the Free University of Brussels (ULB) in Belgium have verified that the relevant reactions of atomic nuclei do take place in this environment, producing the heaviest elemen
Read more