In a first, this warp drive actually obeys the laws of physics.
Category: space travel – Page 41
NASA is developing a ChatGPT-style interface for future spacecraft, giving astronauts the ability to talk to the systems using natural language — and have the systems talk right back.
Space talk: In June 2018, a massive dust storm on Mars engulfed NASA’s Opportunity rover, cutting off communication with Earth. Eight months later, NASA announced an end to the rover’s 15-year Mars mission.
“The last message [NASA] received was basically, ‘My battery is low and it’s getting dark,’” tweeted science reporter Jacob Margolis after talking to NASA about the rover.
Want to go on an unforgettable trip? Abstract Submission closing soon! Exciting news from SnT, Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg! We are thrilled to announce the 1st European Interstellar Symposium in collaboration with esteemed partners like the Interstellar Research Group, Initiative & Institute for Interstellar Studies, Breakthrough Prize Foundation, and Luxembourg Space Agency. This interdisciplinary symposium will delve into the profound questions surrounding interstellar travel, exploring topics such as human and robotic exploration, propulsion, exoplanet research, life support systems, and ethics. Join us to discuss how these insights will impact near-term applications on Earth and in space, covering technologies like optical communications, ultra-lightweight materials, and artificial intelligence. Don’t miss this opportunity to connect with a community of experts and enthusiasts, all united in a common goal. Check out the “Call for Papers” link in the comment section to secure your spot! Image credit: Maciej Rębisz, Science Now Studio #interstellar #conference #Luxembourg #exoplanet
After starting science operations in February, Japan-led XRISM (X-ray Imaging and Spectroscopy Mission) studied the monster black hole at the center of galaxy NGC4151.
“XRISM’s Resolve instrument captured a detailed spectrum of the area around the black hole,” said Brian Williams, NASA’s project scientist for the mission at the agency’s Goddard Space Flight Center in Greenbelt, Maryland. “The peaks and dips are like chemical fingerprints that can tell us what elements are present and reveal clues about the fate of matter as it nears the black hole.”
XRISM (pronounced “crism”) is led by JAXA (Japan Aerospace Exploration Agency) in collaboration with NASA, along with contributions from ESA (European Space Agency). It launched Sept. 6, 2023. NASA and JAXA developed Resolve, the mission’s microcalorimeter spectrometer.
Innovative infrared sensors developed by NASA increase resolution for Earth and space imaging, promising advancements in environmental monitoring and planetary science.
A newly developed infrared camera featuring high resolution and equipped with a range of lightweight filters has the potential to analyze sunlight reflected from Earth’s upper atmosphere and surface, enhance forest fire alerts, and uncover the molecular composition of other planets.
These cameras are equipped with sensitive, high-resolution strained-layer superlattice sensors, originally developed at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, funded through the Internal Research and Development (IRAD) program.
A concept that began as a doodle at a conference years ago is now becoming a reality.
RocketStar Inc. has showcased its advanced nuclear-based propulsion technology called the FireStar Drive.
It is said to be the world’s first electric device for spacecraft propulsion boosted by nuclear fusion.
From pocket-sized AI models to a warp drive breakthrough, check out this week’s awesome tech stories from around the web.
While tantalizing, Alcubierre’s design has a fatal flaw. To provide the necessary distortions of spacetime, the spacecraft must contain some form of exotic matter, typically regarded as matter with negative mass. Negative mass has some conceptual problems that seem to defy our understanding of physics, like the possibility that if you kick a ball that weighs negative 5 kilograms, it will go flying backwards, violating conservation of momentum. Plus, nobody has ever seen any object with negative mass existing in the real universe, ever.
These problems with negative mass have led physicists to propose various versions of “energy conditions” as supplements to general relativity. These aren’t baked into relativity itself, but add-ons needed because general relativity allows things like negative mass that don’t appear to exist in our universe—these energy conditions keep them out of relativity’s equations. They’re scientists’ response to the unsettling fact that vanilla GR allows for things like superluminal motion, but the rest of the universe doesn’t seem to agree.
The energy conditions aren’t experimentally or observationally proven, but they are statements that concord with all observations of the universe, so most physicists take them rather seriously. And until recently, physicists have viewed those energy conditions as making it absolutely 100 percent clear that you can’t build a warp drive, even if you really wanted to.
New solar observations indicate that plasma waves are responsible for the Sun’s outer atmosphere having different abundances of chemical elements than the Sun’s other layers.
The solar corona is a halo of hot, tenuous plasma that surrounds the Sun out to large distances. It is visible during solar eclipses (Fig. 1) but is usually outshone by the glare of the Sun’s surface, or photosphere. The corona has different abundances of chemical elements than the rest of the Sun, and a longstanding question has been why this disparity exists. New solar measurements by Mariarita Murabito at the Italian National Institute of Astrophysics (INAF) and colleagues suggest that the difference is caused by plasma waves dragging easily ionized elements from the Sun’s lower atmosphere into the corona [1]. This finding could lead to a better understanding of the structure of stars.
The corona is of great interest to solar physicists, partly because it produces the solar wind—an outflow of hot gas from the Sun. The solar wind is most evident to us on Earth when its particles become trapped in Earth’s magnetic field and collide with our atmosphere, causing an aurora. An important problem in solar physics is to determine which coronal structures generate the solar wind and how solar conditions affect the outflow’s properties. The elemental composition of the solar wind sheds light on its origins, as this composition does not change once the gas leaves the Sun. The solar wind can be directly sampled by spacecraft in situ, and its elemental abundances can be compared to coronal abundances inferred from spectroscopy.
Scientists have made a significant breakthrough in understanding the properties of promethium, a rare earth element with elusive characteristics despite its use in modern technology.
Researchers have uncovered the properties of a rare earth element that was first discovered 80 years ago at the very same laboratory. Their discoveries open a new pathway for the exploration of elements critical in modern technology, from medicine to space travel.
Promethium was discovered in 1945 at Clinton Laboratories, now the Department of Energy’s Oak Ridge National Laboratory, and continues to be produced at ORNL in minute quantities. Some of its properties have remained elusive despite the rare earth element’s use in medical studies and long-lived nuclear batteries. It is named after the mythological Titan who delivered fire to humans and whose name symbolizes human striving.