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Using direct imaging, astronomers have found a brown dwarf that could help test technology for taking snapshots of Earth-like exoplanets

An idea for the stubborn winter stargazer on your holiday list (especially if it's you!)

The post The Gift of Warmth (and Whimsy) appeared first on Sky & Telescope.

Searching for technosignatures - signs of technology on a planet that we can see from afr - remains a difficult task. There are so many different factors to consider, and we only have the technological capabilities to detect a relatively small collection of them. A new paper, available in pre-print on arXiv but also accepted for publication into The Astrophysical Journal Letters, from Jacob Haqq-Misra of the Blue Marble Space Institute of Science and his co-authors explores some of those capabilities by using a framework they developed known as Project Janus that estimates what technology will look like on Earth 1,000 years from now in the hopes that we can test whether or not we can detect it on another planet.

From a dragonfly to marine organisms, photographer Michael Benson zoomed in with powerful scanning electron microscopes to take these extraordinary shots for his book Nanocosmos

From a dragonfly to marine organisms, photographer Michael Benson zoomed in with powerful scanning electron microscopes to take these extraordinary shots for his book Nanocosmos

Nearly three decades since the remarkable cloning of Dolly the sheep, it has all gone quiet on the human cloning front. Michael Le Page wonders what's happening behind the scenes

Nearly three decades since the remarkable cloning of Dolly the sheep, it has all gone quiet on the human cloning front. Michael Le Page wonders what's happening behind the scenes

Camera traps in an area of the Leuser rainforest patrolled by NGOs spotted 17 tigers in 2023 and 18 Sumatran tigers in 2024, while surveys elsewhere on the island averaged seven

Camera traps in an area of the Leuser rainforest patrolled by NGOs spotted 17 tigers in 2023 and 18 Sumatran tigers in 2024, while surveys elsewhere on the island averaged seven

NGC 6888, also known as the Crescent Nebula, is a

Big, beautiful spiral galaxy NGC 1055 is a dominant member of

What can an exoplanet leaking helium teach astronomers about the formation and evolution of exoplanet atmospheres? This is what a recent study published in Nature Astronomy hopes to address as an international team of scientists investigated atmospheric escape on a puffy exoplanet. This study has the potential to help scientists better understand the formation and evolution of gas giant planets, specifically with many gas giant planets observed orbiting extremely close to their stars.

Duelling prairie chickens, a snake-mimicking moth and a once-a-year sunrise at the South Pole feature in the best images from the Royal Society Publishing Photography Competition 2025

Duelling prairie chickens, a snake-mimicking moth and a once-a-year sunrise at the South Pole feature in the best images from the Royal Society Publishing Photography Competition 2025

arXiv:2512.00492v1 Announce Type: new Abstract: We describe how the ESA Comet Interceptor mission, which is due to launch in 2028/29 to a yet-to-be-discovered target, can provide a conceptual basis for a future mission to visit an Interstellar Object. Comet Interceptor will wait in space until a suitable long period comet is discovered, allowing rapid response to perform a fast flyby of an object that will be in the inner Solar System for only a few years; an enhanced version of this concept ...

The JWST has made a name for itself by discovering mature galaxies in the Universe's early times. This time, a pair of Indian astronomers working with the JWST found a fully-formed spiral galaxy much like the Milky Way only 1.5 billion years after the Big Bang. The discovery, and others like it, are forcing scientists to reconsider their understanding of the cosmic timeline.

By blocking a molecule that pushes the immune system into overdrive, a vaccine protects mice from life-threatening anaphylaxis

By blocking a molecule that pushes the immune system into overdrive, a vaccine protects mice from life-threatening anaphylaxis

Without the gene Poc5, male mice produced no viable sperm, pointing to a possible link to infertility

Jared Isaacman—the presumptive next leader of NASA—answered questions about his plans for the future of U.S. space exploration on Wednesday