OrbitalHub

NASA dixit:

“Several cameras on the International Space Station (ISS) have eyes on NICER. Since arriving to the space station on June 5 – aboard SpaceX’s eleventh cargo resupply mission – NICER underwent robotic installation on ExPRESS Logistics Carrier 2, initial deployment, precise point tests and more. This video shows segments of NICER’s time in space. Scientists and engineers will continue to watch NICER, using these cameras, throughout the mission’s science operations.”

Credit: Music Credits: KillerTracks, Strange Reality

Video credit: NASA’s Goddard Space Flight Center/Clare Skelly

ESA dixit:

“[This is a] Video showing a test of the mechanisms steering the four solar electric propulsion thrusters on BepiColombo’s Mercury Transfer Module (speeded up by 20 times). The module will use a combination of electric propulsion and multiple gravity assists at Earth, Venus and Mercury to carry BepiColombo’s two scientificorbiters – ESA’s Mercury Planetary Orbiter and Japan’s Mercury Magnetospheric Orbiter – to the innermost planet in our Solar System.

The test is designed to demonstrate that the mechanisms can reach their full steering range. The thruster mechanisms control the steering of the spacecraft during the long thrust arcs of the 7.2 year cruise to Mercury and as such are used for navigation, attitude control, and reaction wheel off-loading. Together with the onboard software, the mechanisms will update the direction of the thrust vector every five minutes relative to the spacecraft’s evolving centre of gravity. The thrusters will be fired for several months at a time between the gravity assist flybys.

This particular test was conducted in April 2017, before the spacecraft was put into the composite stack configuration. The same test will be repeated again later in the year to verify performance after the stack level vibration test campaign.”

Video credit: ESA

ESA dixit:

“The high performance of ESA’s new generation ‘Planetary and Asteroid Natural scene Generation Utility’ or Pangu software enables real-time testing of both landing algorithms and hardware. Entry, descent and landing on a planetary body is an extremely risky move: decelerating from orbital velocities of multiple km per second down to zero, at just the right moment to put down softly on an unknown surface, while avoiding craters, boulders and other unpredictable hazards.

But Pangu can generate realistic images of planets and asteroids on a real-time basis, as if approaching a landing site during an actual mission. This allows the testing of landing algorithms, or dedicated microprocessors or entire landing cameras or other hardware ‘in the loop’ – plugged directly into the simulation – or run thousands of simulations one after the other on a ‘Monte Carlo’ basis, to test all eventualities.

Seen here is a Pangu recreation of the Mars Curiosity’s rover’s approach to Mars, using original telemetry, and then a view of Mars moon Phobos. This is followed by another recreation the Japanese Hayabusa probe’s encounter with the rubble-strewn Itokawa near-Earth asteroid, and finally a telemetry-based recreation of the field of view of the New Horizons mission as it performed its rapid flyby of Pluto.

This new generation of Pangu was developed for ESA by the University of Dundee in Scotland.”

Video credit: ESA

NASA dixit:

“At any given moment, as many as 10 million wild jets of solar material burst from the sun’s surface. They erupt as fast as 60 miles per second, and can reach lengths of 6,000 miles before collapsing. These are spicules, and despite their grass-like abundance, scientists didn’t understand how they form. Now, for the first time, a computer simulation — so detailed it took a full year to run — shows how spicules form, helping scientists understand how spicules can break free of the sun’s surface and surge upward so quickly.

This work relied upon high-cadence observations from NASA’s Interface Region Imaging Spectrograph, or IRIS, and the Swedish 1-meter Solar Telescope in La Palma. Together, the spacecraft and telescope peer into the lower layers of the sun’s atmosphere, known as the interface region, where spicules form.”

Music credit: ‘Solar Dust’ by Laurent Levesque [SACEM], ‘Games Show Sphere 05’ by Anselm Kreuzer [GEMA] from Killer Tracks

Video credit: NASA’s Goddard Space Flight Center/CI Lab

NASA dixit:

“Doomed neutron stars whirl toward their demise in this animation. Gravitational waves (pale arcs) bleed away orbital energy, causing the stars to move closer together and merge. As the stars collide, some of the debris blasts away in particle jets moving at nearly the speed of light, producing a brief burst of gamma rays (magenta). In addition to the ultra-fast jets powering the gamma-rays, the merger also generates slower moving debris. An outflow driven by accretion onto the merger remnant emits rapidly fading ultraviolet light (violet). A dense cloud of hot debris stripped from the neutron stars just before the collision produces visible and infrared light (blue-white through red). The UV, optical and near-infrared glow is collectively referred to as a kilonova. Later, once the remnants of the jet directed toward us had expanded into our line of sight, X-rays (blue) were detected. This animation represents phenomena observed up to nine days after GW170817.”

Music credit: “Exploding Skies” from Killer Tracks

Video credit: NASA’s Goddard Space Flight Center/CI Lab

NASA dixit:

“Engineers at NASA’s Stennis Space Center in Mississippi on October 19 completed a hot-fire test of RS-25 rocket engine E2063, a flight engine for NASA’s new Space Launch System (SLS) rocket. Engine E2063 is scheduled to help power SLS on its Exploration Mission-2 (EM-2), the first flight of the new rocket to carry humans.”

Video credit: NASA