GNSS resilience is an economic and security priority

Modern society has become profoundly reliant on Global Navigation Satellite Systems (GNSS). These systems support aviation safety, emergency services, finance, communications, energy networks and an expanding array of autonomous and industrial systems. Yet despite this reliance, GNSS remains inherently fragile: low‑power signals transmitted from medium Earth orbit are surprisingly easy to degrade, and the consequences […] The post GNSS resilience is an economic and security priority appeared first on SpaceNews.

Starshade concept could reveal Earth-like exoplanets

Finding Earth-like exoplanets with the composition and ingredients for life as we know it is the Holy Grail of exoplanet hunting. Since the first exoplanets were identified in the 1990s, scientists have pushed the boundaries of finding exoplanets through new and exciting methods. One of these methods is the direct imaging method, which involves carefully blocking out the host star within the observing telescope, thus revealing the orbiting exoplanets that were initially hiding within the star’s immense glare.

Astronomers Produce the Largest Image Ever Taken of the Heart of the Milky Way

Astronomers have captured the central region of our Milky Way in a striking new image, unveiling a complex network of filaments of cosmic gas in unprecedented detail. Obtained with the Atacama Large Millimeter/submillimeter Array (ALMA), this rich dataset—the largest ALMA image to date—will allow astronomers to probe the lives of stars in the most extreme region of our galaxy, next to the supermassive black hole at its center.

Quantum entanglement offers route to higher-resolution optical astronomy

Researchers in the US have demonstrated how quantum entanglement could be used to detect optical signals from astronomical sources at the single-photon level. Published in Nature, a team led by Pieter-Jan Stas at Harvard University showed how extremely weak light signals could be detected across a fiber link spanning more than 1.5 km—possibly paving the way for optical telescopes with unprecedented resolution.

High-resolution ocean models better capture Atlantic-driven European heat waves

Europe is struggling more and more with extreme heat in the summer. While climate change is the main reason for this increase, what specific physical mechanisms cause a heat wave? One important driver of weather conditions in Europe is the North Atlantic. For example, studies by the Max Planck Institute for Meteorology (MPI-M) have shown that heat build-up in the subtropical North Atlantic can lead to extremely hot summers in Europe several years later.

A Plan B for space? On the risks of concentrating national space power in private hands

Private companies are no longer peripheral participants in U.S. space activities. They provide key services, including launching and deploying satellites, transporting cargo and astronauts to the International Space Station, and even sending landers to the Moon. Continue ReadingA Plan B for space? On the risks of concentrating national space power in private hands