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Interstellar objects like 3I/ATLAS are exciting, but there is no reason to claim that they are evidence of alien spacecraft – sometimes a comet is just comet, says Robin George Andrews

Immunologist Zachary Rubin explains how the World Health Organization decides which strains of influenza end up in annual flu vaccines.

Standard techniques for removing kidney stones often require repeated surgery, but a magnetic gel seems to make the process more efficient

Standard techniques for removing kidney stones often require repeated surgery, but a magnetic gel seems to make the process more efficient

Are we the only rational thinkers? New research on our primate cousins suggests otherwise

A new study has found that the 260-day ritual calendar is the key to understanding how the Maya predicted solar eclipses.

The post Maya 260-day Calendar Provides Key to Solar Eclipse Predictions appeared first on Sky & Telescope.

Seismometers picked up the ferocious winds and waves of Hurricane Melissa, showing how the tools can be used to better understand storms today and those from the past

What if I told you that while you can’t see dark matter, maybe you can hear it?

“The only countries that will really learn more if [U.S. nuclear] testing resumes are Russia and, to a much greater extent, China,” says Jeffrey Lewis, an expert on the geopolitics of nuclear weaponry

President Donald Trump appears to have ordered a return to nuclear testing after decades of uneasy but effective treaties banning the practice – but will it actually happen?

President Donald Trump appears to have ordered a return to nuclear testing after decades of uneasy but effective treaties banning the practice – but will it actually happen?

Palaeontologists have argued for decades over whether certain fossils are young Tyrannosaurus rex or another species entirely – now they have strong evidence that the diminutive Nanotyrannus really existed

Palaeontologists have argued for decades over whether certain fossils are young Tyrannosaurus rex or another species entirely – now they have strong evidence that the diminutive Nanotyrannus really existed

An analysis suggests Nanotyrannus is a separate, smaller dinosaur that lived alongside T. rex, settling a 30-year debate

Some scientists are concerned that the Trump administration will use “junk science” when reviewing mifepristone’s safety record

What would the world look like if we changed the value of pi? Whether in the real world or a game environment, the answer is complex

Female Aedes mosquitoes signal that copulation can proceed by subtly extending their genitalia

A new type of germanium superconductor could allow classical and quantum chips to be built into one device, creating better and more reliable quantum computers.

A new type of germanium superconductor could allow classical and quantum chips to be built into one device, creating better and more reliable quantum computers.

Video: 00:45:45

Follow the online briefing on the launch scheduled for 4 November 2025. The Copernicus Sentinel-1 mission delivers radar images of Earth’s surface. It is vital for disaster response teams, environmental agencies, maritime authorities, climate scientists.