SUN BLOCK: Preflight test layers for the sunshield that will protect NASA’s James Webb Space Telescope are meeting performance targets during engineering tests, according to telescope prime Northrop Grumman. The tennis-court-sized sunshield is designed to keep the telescope cool enough in its Earth-trailing orbit for its sensitive infrared instruments to work. The membrane layers of the sunshield, each as thin as a human hair, are made of Kapton. ManTech International produces the sunshield.

Efforts are under way to improve communications links that scientists on the ground can use to help astronauts run their experiments

FOUL WEATHER: The looming arrival of Tropical Storm Debby has prompted United Launch Alliance and the U.S. Air Force to delay the launch of the National Reconnaissance Office’s latest classified satellite by 24 hr. The launch of NROL-15 is now set for June 29 at 6:13 a.m. from Space Launch Complex-37 at Cape Canaveral. The protective Mobile Service Tower will remain around the Delta IV launch vehicle and is scheduled to be moved for launch on June 28.

SATCOM MARKET: The worldwide commercial communications satellite market will be worth $52.7 billion from 2012-2021, according to a new study from consultancy Forecast International. Demand will be especially strong in developing markets such as Eastern Europe, North Africa, the Middle East, Latin America, and Asia, the study says, driven by a lack of terrestrial networks and rapid growth in demand for communications in these areas. The top manufacturers over the next decade will be Space Systems/Loral, Thales Alenia Space, EADS Astrium, Boeing and Lockheed Martin.

The most powerful version of Space Exploration Technologies' Merlin rocket engine yet developed has completed its first full-duration mission firing test

LOS ANGELES — NASA is completing fabrication of the first Lockheed Martin Orion crew exploration capsule due to be tested in space, while at the same time starting key vacuum tests on the Alliant Techsystems (ATK)-built composite module that could form the basis for future crew transport to Earth orbit. Following final structural work, the Exploration Flight Test 1 (EFT-1) Orion will be shipped from NASA’s Michoud Assembly Facility in New Orleans to Kennedy Space Center, Fla., where it will undergo final assembly and checkout.

DARK MATTERS: European scientists finally have agreed to start the $1 billion Euclid project, devoted to the study of dark energy. After months of delay in securing approval, Euclid still proved too compelling to set aside, despite far exceeding the funding allocated for what the European Space Agency calls its medium-class missions. The 2,160-kg (4,750-lb.) satellite is scheduled to launch to the L2 Lagrangian point in the second quarter of 2020 aboard a European variant of the Soyuz rocket from Europe’s spaceport in Kourou, French Guiana.

ICY MOON: Mapping the floor of the Moon’s Shackleton Crater in what NASA describes as unprecedented detail, agency scientists and university researchers have calculated that unusually bright laser returns from the crater floor may be caused by ice mixed in with other material there. As much as 22% of the surface material in Shackleton could be ice, according to a paper published in the journal Nature, based on laser-mapping data from NASA’s Lunar Reconnnaisance Orbiter.