Fisher information achievable with single-qubit sensor. Credit: Physical assessment letters (2024). DOI: 10.1103/PhysRevLett.132.260801 The idea of time travel has baffled sci-fi fans for years. Science tells us that traveling into the future is technically feasible—at least if you’re willing to travel close to the speed of light—but going back in time is a no-go. But … Read more
This article was originally published on The conversation. The publication contributed the article to Space.com Expert Voices: Opinion Pieces and Insights. Alan Cooper is a professor at Charles Sturt University Pavle Arsenovic is a senior scientist at the University of Natural Resources and Life Science (BOKU). The remarkable aurora borealis in early May this year … Read more
Snapshot taken by SLAC’s High Speed Electron Camera, an ultrashort electron diffraction (MeV-UED) instrument, showing evidence of circular polarization of terahertz light through an ultrathin sample of tungsten ditelluride. Source: Nano letters (2024). DOI: 10.1021/acs.nanolett.4c00758 While taking snapshots with the high-speed electron camera at the Department of Energy’s SLAC National Acceleratory Laboratory, researchers discovered new … Read more
Enlarge / From left to right, zooming in from the globular cluster to the location of the black hole. ESA/Hubble & NASA, M. Häberle Supermassive black holes appear to reside at the center of every galaxy, and have done so since galaxies formed early in the history of the universe. However, we currently cannot fully … Read more
Scientists have confirmed that time passes faster on the moon than on Earth, which has implications for future space missions. Because the Moon’s gravity is one-sixth that of Earth’s, this affects the speed at which time moves. NASA scientists have determined that time passes 57 millionths of a second faster on the moon than on … Read more
Researchers in Australia are building a “living seed bank” to protect the continent’s last remaining rainforests from climate change. One goal is to prevent the extinction of ancient trees whose ancestral roots can be traced back to Gondwana, the supercontinent that existed before Earth’s continents separated hundreds of millions of years ago. Historically, Australia’s lush … Read more
Lead author Kushal Rijal (right) and Neno Fuller (left) performed the TR-TPPE measurement using the ultrahigh-power vacuum photoemission spectroscopy system shown in the image. Credit: Kushal and Fuller Solar energy is crucial to a clean energy future. Traditionally, solar energy has been harvested using silicon, the same semiconductor material used in everyday electronic devices. But … Read more
The Chinese space agency has officially declared that the US is a competitor on the moon for the first time. The shocking decision by the Chinese National Space Administration comes after they have vehemently stated that they will never compete with the US. 3 An image taken by the ‘mobile camera’ carried by the Chang’e-6 … Read more
The Chinese space agency has officially declared that the US is a competitor on the moon for the first time. The shocking decision by the Chinese National Space Administration comes after they have vehemently stated that they will never compete with the US. An image taken by the ‘mobile camera’ carried by the Chang’e-6 probe … Read more
This image shows the ultracold atomic quantum simulator. The red and blue balls represent the fermionic atoms with up and down spins respectively, arranged in a stacked pattern in 3D space, forming the antiferromagnetic crystal. The glass cell provides the ultrahigh vacuum environment for the ultracold atoms. Credit: Chen Lei In a study published in … Read more