OrbitalHub

Wikipedia dicit:

“NROL designates satellites operated by the United States National Reconnaissance Office.

The National Reconnaissance Office (NRO) develops and operates space reconnaissance systems and conducts intelligence-related activities for U.S. national security. It also coordinates collection and analysis of information from airplane and satellite reconnaissance by the military services and the Central Intelligence Agency. It is funded through the National Reconnaissance Program, which is part of the National Intelligence Program (formerly known as the National Foreign Intelligence Program). The agency is part of the Department of Defense.

The NRO works closely with its intelligence and space partners, which include the National Security Agency (NSA), the National Geospatial-Intelligence Agency (NGA), the Central Intelligence Agency (CIA), the Defense Intelligence Agency (DIA), the United States Strategic Command, Naval Research Laboratory and other agencies and organizations.”

Video Credit: ULA

NASA dicit:

“Year 2018 was the fourth hottest year in the modern record, part of a decades-long trend of warming. The record dates back to 1880, when it became possible to collect consistent, reliable temperatures around the planet. NASA and NOAA work together to track the temperatures, part of ongoing research into our warming planet.”

Video Credit: NASA Goddard

NASA dicit:

“The animation depicts a shape model of Ultima Thule created by the New Horizons science team based on its analysis of all the pre-flyby images sent to Earth so far. The first half of the movie mimics the view from the New Horizons spacecraft as it approached Ultima Thule and has the snowman shape that was so frequently mentioned in the days surrounding the New Year’s 2019 flyby.

The movie then rotates to a side-view that illustrates what New Horizons might have seen had its cameras been pointing toward Ultima Thule only a few minutes after closest approach. While that wasn’t the case, mission scientists have been able to piece together a model of this side-view, which has been at least partially confirmed by a set of crescent images of Ultima Thule. There is still considerable uncertainty in the sizes of Ultima (the larger section, or lobe) and Thule (the smaller) in the vertical dimension, but it’s now clear that Ultima looks more like a pancake than a sphere, and that Thule is also very non-spherical.”

Video Credit: NASA

NASA dicit:

“The Global-scale Observations of the Limb and Disk, or GOLD, instrument launched aboard a commercial communications satellite in January 2018 to inspect the dynamic intermingling of space and Earth’s uppermost atmosphere. Together, GOLD and another NASA mission, Ionospheric Connection Explorer spacecraft, or ICON, will provide the most comprehensive of Earth’s upper atmosphere we’ve ever had.

Above the ozone layer, the ionosphere is a part of Earth’s atmosphere where particles have been cooked into a sea of electrically-charged electrons and ions by the Sun’s radiation. The ionosphere is co-mingled with the very highest — and quite thin — layers of Earth’s neutral upper atmosphere, making this region an area that is constantly in flux undergoing the push-and-pull between Earth’s conditions and those in space. Increasingly, these layers of near-Earth space are part of the human domain, as it’s home not only to astronauts, but to radio signals used to guide airplanes and ships, and satellites that provide our communications and GPS systems. Understanding the fundamental processes that govern our upper atmosphere and ionosphere is crucial to improve situational awareness that helps protect astronauts, spacecraft and humans on the ground.”

Video Credit: NASA Goddard

NASA dicit:

“One small box of technology is getting NASA one step closer to future exploration missions. The Robotic Refueling Mission 3, or RRM3, will prove technologies to transfer and store common consumables, like spacecraft fuel, in space. NASA has its eyes on human exploration, including venturing forward to the Moon and Mars. First, the agency must develop and perfect the technologies and capabilities needed for these missions. Affixed to the International Space Station, RRM3 will use a suite of three tools and the station’s robotic handyman, Dextre, to transfer and store cryogenic propellant (e.g., liquid methane). These capabilities have applications ranging from in-situ resource utilization to solar electric propulsion to maintaining long-term life support systems.

RRM3 builds on the first two phases of International Space Station technology demonstrations that tested tools, technologies and techniques to refuel and repair satellites in orbit. It is developed and operated by the Satellite Servicing Projects Division at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, under direction of NASA’s Space Technology Mission Directorate.”

Video Credit: NASA Goddard

NASA dicit:

“A new NASA-led study has determined that an increase in snowfall accumulation over Antarctica during the 20th century mitigated sea level rise by 0.4 inches. However, Antarctica’s additional ice mass gained from snowfall only makes up for about a third of its current ice loss. These findings don’t necessarily mean that Antarctica is growing; it’s still losing mass, even with the extra snowfall. However, without these gains, the planet would have experienced even more sea level rise in the 20th century. The polar ice sheets grow via snow accumulation and shrink through melting and the production of icebergs. Presently, both ice sheets are imbalanced –losing more ice annually than they are gaining– and their ice loss is estimated to be currently causing about a half of the observed sea level rise.”

Video Credit: NASA Goddard