Astronomy

As more men turn to testosterone replacement therapy (TRT) for energy, mood and muscle, experts warn the risks are still not fully understood.

James Webb Space Telescope finds exoplanets in extreme environments that could potentially be habitable.

Image: A close-up view of Vienna, Austria’s capital city, is featured in this image from April 2025.

ESA Delivers: 50 years booklet

50 hallmark achievements across 50 years

Rocket Lab planned to launch a satellite for a confidential customer early Friday morning (June 20), but Mother Nature didn't cooperate.

Unlike other primates, humans are exposed to high levels of placental sex hormones in the womb, which may have shaped our evolutionary brain development

Unlike other primates, humans are exposed to high levels of placental sex hormones in the womb, which may have shaped our evolutionary brain development

For centuries Mars has been called "the Red Planet" and there's a scientific reason why.

A powerful new technique is poised to revolutionize how astronomers observe black holes, by producing sharp, multicolored images that could reveal their dynamic evolution in real time.

A newly identified brain circuit in mice may explain why we sleep longer and deeper after being sleep deprived – and lead to new treatments for sleep conditions

A newly identified brain circuit in mice may explain why we sleep longer and deeper after being sleep deprived – and lead to new treatments for sleep conditions

Treating types of cancer with CAR T-cell therapy is expensive and inconvenient, but a streamlined approach that creates the therapy within the body could make the intervention cheaper and easier

Treating types of cancer with CAR T-cell therapy is expensive and inconvenient, but a streamlined approach that creates the therapy within the body could make the intervention cheaper and easier

The sun will reach its most northern point on June 20, marking the start of the summer season in the Northern Hemisphere.

Data from beach cleanups show that banning or taxing single-use plastic bags makes a difference in ecosystems

This 4+ Lego set is colorful and fun, ideal for young Marvel fans looking for an early introduction to building Lego.

Researchers bring a SETI approach to the question of what—if anything—humpbacks’ underwater smoke rings might be trying to “say”

Gaia, Europe’s Milky Way–mapping spacecraft, shut down earlier this year. It was arguably the most important—and most overlooked—astronomy project of the 21st century

Very massive stars (VMSs), which typically has masses about 100 times that of our own Sun, are critical components in our understanding of the formation of important astronomical structures like black holes and supernovae. However, there are some observed characteristics of VMSs that don’t fit the expected behavior based on the best models we have of them. In particular, they hover around a relatively limited band of temperatures, which are hard to replicate with typical stellar evolution models. A new paper from Kendall Shepherd and their co-authors at the Institute for Advanced Study (SISSA) in Italy describes a series of new models based on updated solar winds that better fit the observations of VMSs in their natural environment, and might aid in our understanding of the development of some of the most fascinating objects in the Universe.

LUNAA Journeys (St. LUcia National Astronomy Association) is looking to address an all too common problem in the global astronomical community. Too often, participation in astronomy is seen as cost prohibitive, the sole pursuit of large universities or organizations that can afford to build a large modern observatory, or launch the Hubble Space Telescope. This is unfortunate, as there’s never been an era of more readily accessible information, out there in terms of astronomy and skywatching.