Mars is not what it used to be. Once warm, watery, and blanketed by a thick atmosphere, today the Red Planet is cold, dry, and draped by a thin atmospheric veil. The main culprit is a relentless stream of particles from the Sun, known as the solar wind. Over billions of years, the solar wind has stripped away
At the core of Isaacman’s concerns is the low flight rate of the SLS rocket and Artemis missions. During past exploration missions, from Mercury through Gemini, Apollo, and the Space Shuttle program, NASA has launched humans on average about once every three months. It has been nearly 3.5 years since Artemis I launched. “This is
Six planets will parade across the sky this weekend in a rare celestial spectacle, experts have said. For the next few days, Jupiter, Saturn, Venus, Mercury, Neptune and Uranus will all be visible at the same time in the night sky – although binoculars or a telescope will be needed to spot the latter two
This striking image from the science camera on ESA’s Jupiter Icy Moons Explorer (Juice) shows interstellar comet 3I/ATLAS spewing dust and gas. The tiny nucleus of the comet (not visible) is surrounded by a bright halo of gas known as the coma. A long tail stretches away from the comet, and we see hints of
Mice were given acetate and then performed tasks that tested their memory.Credit: fergregory/iStock via Getty A common metabolic by-product produced when the body breaks down alcohol, glucose and food high in fibre can enhance memory, at least in females, according to a study in mice1. In the study, published in Science Signaling, scientists injected acetate
A total lunar eclipse will create a stunning “Blood Moon” on March 3 (Credit: Jacek Rużyczka/ CC BY-SA 4.0/ Wikimedia Commons) Skywatchers are in for a treat. On March 3, 2026, a spectacular total lunar eclipse will turn the Moon a deep reddish color, creating what is known as a “Blood Moon.” The eclipse will
Seeing a color in nature is one thing. Recreating colors artificially is an entirely different challenge—one with some unexpectedly high stakes. Practically anything human-made is of a certain color thanks to artificial pigments, or chemical compounds that appear a specific color. An ongoing challenge is that, as chemical bonds naturally fade, so does the color.
We all know we live in three-dimensional space. But what does it mean when people talk about four dimensions? Is it just a bigger kind of space? Is it “space-time”, the popular idea which emerged from Einstein’s theory of relativity? If you have wondered what four dimensions really look like, you may have come across
Scientists report the first confirmed field observation of a rare class of electrical phenomena associated with vegetation that has eluded scientific confirmation for nearly a century. For many decades, observers have logged reports of unusual glows emitted by vegetation, with a leading theory of their cause being faint electrical discharges triggered by atmospheric activity associated
Recent advancements in climate research have shed light on a crucial element of global sea-level rise: the mass of water added to the oceans, primarily from melting land ice. A new study, published in the Proceedings of the National Academy of Sciences, highlights how space-based technologies, including satellite laser ranging (SLR), are now being used