A cross-section of a 3D simulation replicating a scenario for the impact that formed the Moon, showing a roughly Mars-mass impactor grazing an Earth-like target at a 45-degree angle. The simulation uses over 100 million particles, colored by their internal energy, related to their temperature.
This is one of more than 300 simulations that scientists at Durham University in the United Kingdom, alongside researchers at NASA’s Ames Research Center in California’s Silicon Valley, ran to develop a way to predict how much atmosphere is lost from a wide range of collisions between rocky objects, presented in a new study.
We propose a novel spacesuit intelligent architecture for extravehicular activity (EVA) operations on Mars and other planetary environments that increases human performance by an order of magnitude on several quantifiable fronts for exploration missions. The proposed SmartSuit spacesuit, while gas-pressurized, also incorporates soft-robotics technology that allows astronauts to be highly mobile and better interact with their surroundings. The spacesuit also incorporates a soft and stretchable self-healing skin (or membrane) located in the outer layer that not only protects the astronaut but also collects data through integrated, transparent sensors embedded in the membrane. These sensors are capable of visually displaying environmental and membrane structural information, providing visual feedback to the wearer about the surroundings.
The SpaceX team attempted a high-altitude flight test of Starship serial number 11 (SN11) – our fourth high-altitude flight test of a Starship prototype from Starbase in Texas. Similar to previous high-altitude flight tests of Starship, SN11 was powered through ascent by three Raptor engines, each shutting down in sequence prior to the vehicle reaching apogee – approximately 10 km in altitude. SN11 performed a propellant transition to the internal header tanks, which hold landing propellant, before reorienting itself for reentry and a controlled aerodynamic descent.
A controlled aerodynamic descent with body flaps and vertical landing capability, combined with in-space refilling, are critical to landing Starship at destinations across the solar system where prepared surfaces or runways do not exist, and returning to Earth. This capability will enable a fully reusable transportation system designed to carry both crew and cargo on long-duration, interplanetary flights and help humanity return to the Moon, and travel to Mars and beyond.
Video shows engineers at NASA’s Marshall Space Flight Center in Huntsville, Alabama, completing the welds to form the launch vehicle stage adapter (LVSA) for NASA’s Space Launch System (SLS) rocket. The launch vehicle stage adapter in this video will fly on Artemis II, the first crewed mission of NASA’s Artemis program. Upon stacking the upper and lower cones, technicians use advanced robotic tooling and an innovative process called friction stir welding, to join the cones of the LVSA to form one structure.
The next step in the manufacturing process is the installation of the pneumatically actuated frangible joint which sits atop the LVSA and helps separate the core stage and LVSA from the Interim Cryogenic Propulsion Stage (ICPS) during flight. After the core stage launches the rocket, the ICPS provides the power to send the Orion spacecraft and its crew to the Moon.
An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917, but was not recognized as such. The first confirmation of detection occurred in 1992. This was followed by the confirmation of a different planet, originally detected in 1988. As of 1 April 2021, there are 4,704 confirmed exoplanets in 3,478 systems, with 770 systems having more than one planet.
There are many methods of detecting exoplanets. Transit photometry and Doppler spectroscopy have found the most, but these methods suffer from a clear observational bias favoring the detection of planets near the star; thus, 85% of the exoplanets detected are inside the tidal locking zone. In several cases, multiple planets have been observed around a star. About 1 in 5 Sun-like stars have an “Earth-sized” planet in the habitable zone. Assuming there are 200 billion stars in the Milky Way, it can be hypothesized that there are 11 billion potentially habitable Earth-sized planets in the Milky Way, rising to 40 billion if planets orbiting the numerous red dwarfs are included.
The least massive planet known is Draugr (also known as PSR B1257+12 A or PSR B1257+12 b), which is about twice the mass of the Moon. The most massive planet listed on the NASA Exoplanet Archive is HR 2562 b, about 30 times the mass of Jupiter, although according to some definitions of a planet (based on the nuclear fusion of deuterium), it is too massive to be a planet and may be a brown dwarf instead. Known orbital times for exoplanets vary from a few hours (for those closest to their star) to thousands of years. Some exoplanets are so far away from the star that it is difficult to tell whether they are gravitationally bound to it. Almost all of the planets detected so far are within the Milky Way. There is evidence that extragalactic planets, exoplanets farther away in galaxies beyond the local Milky Way galaxy, may exist. The nearest exoplanets are located 4.2 light-years (1.3 parsecs) from Earth and orbit Proxima Centauri, the closest star to the Sun.
On March 3, Starship serial number 10 (SN10) completed SpaceX’s third high-altitude flight test of a Starship prototype as it successfully ascended, transitioned propellant, and reoriented itself for reentry and an active aerodynamic controlled descent. SN10’s Raptor engines reignited to perform the vehicle’s landing flip maneuver immediately before successfully touching down on the landing pad.
Test flights such as SN10’s are about improving our understanding and development of a fully reusable transportation system designed to carry both crew and cargo on long-duration interplanetary flights, and help humanity return to the Moon, and travel to Mars and beyond.
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