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Category: space – Page 23

A proposed new route to sharper imaging using quantum interference

A new study from the University of Portsmouth has outlined a possible way to improve how we distinguish between two closely spaced light sources, an issue that has long challenged classical imaging systems.

The approach, published in Physical Review Applied, uses principles from to estimate small separations between light-emitting objects, with potential future applications in fields like microscopy, astronomy, and remote sensing.

The research suggests that a relatively simple quantum set-up could be used to extract that is traditionally limited by the so-called Rayleigh criterion—a rule dating back over a century that defines the limits of classical resolution.

The Great Cosmic Wiggle: Quasars Reveal Gravity’s Hidden Rhythm

Gravitational waves are constantly washing over Earth, but an astrophysicist aims to capture them in an entirely new way—by watching distant quasars appear to wiggle due to spacetime distortions.

Using data from the Gaia satellite, he’s searching for three-dimensional effects that previous techniques might have missed.

Exploring a new method to detect gravitational waves.

Could gravity be evidence that the universe is a computer simulation? My new study suggests why this might be so

We have long taken it for granted that gravity is one of the basic forces of nature – one of the invisible threads that keeps the universe stitched together. But suppose that this is not true. Suppose the law of gravity is simply an echo of something more fundamental: a byproduct of the universe operating under a computer-like code.

That is the premise of my latest research, published in the journal AIP Advances. It suggests that gravity is not a mysterious force that attracts objects towards one another, but the product of an informational law of nature that I call the second law of infodynamics.

It is a notion that seems like science fiction – but one that is based in physics and evidence that the universe appears to be operating suspiciously like a computer simulation.

The heart of world’s largest solar telescope begins to beat

The world’s largest solar telescope, the U.S. National Science Foundation (NSF) Daniel K. Inouye Solar Telescope in Hawaii, has reached an important milestone. After almost 15 years of preparation, the German instrument for the Inouye Solar Telescope, the Visible Tunable Filtergraph (VTF), has now taken its first images. The imaging spectro-polarimeter was developed and built at the Institute for Solar Physics (KIS) in Freiburg (Germany). The Max Planck Institute for Solar System Research (MPS) in Göttingen (Germany) is a partner in the project.

The data published now were obtained during the technical commissioning of the instrument. VTF analyzes the sunlight captured by the Inouye Solar Telescope in more detail than ever before and, among other things, extracts information on the flow velocity of the solar plasma and the magnetic field strength at the visible surface of the Sun and in the directly adjacent gas layers above. Even in the current technical test phase, VTF is making smallest structures visible. In later scientific operation, when the data is extensively post-processed, the resolution will improve further.

With a primary mirror diameter of four meters, the Inouye Solar Telescope is the largest in the world. Thanks to the optimal observational conditions on the Hawaiian volcano Haleakala and the use of sophisticated methods of image stabilization and reconstruction, the Inouye Solar Telescope has been providing breathtakingly detailed views of our star since 2022: it can make smallest structures visible. To extract as much detailed information as possible about our star from sunlight, the Inouye Solar Telescope is gradually being equipped with additional scientific instruments. They process the incoming light, for example by examining individual wavelength ranges or polarization states of the light separately. Four of the five instruments are already in operation. The latest addition, the world’s largest spectro-polarimeter VTF, is the most powerful of them. As part of the technical commissioning, the first images of the Sun have now been taken with VTF.

NASA Just Got a Rare Look Inside Uranus — Here’s What They Found

A rare celestial alignment in April 2025 gave NASA scientists the chance to study Uranus in exceptional detail as it passed in front of a distant star. This stellar occultation, visible only from parts of western North America, allowed researchers to measure changes in Uranus’ atmosphere that hav