A mysterious force called Dark Energy might be changing, in a way that challenges our current understanding of the nature of ...

For decades, the prevailing view has been that dark energy causes the universe’s expansion to accelerate indefinitely, potentially ending in a scenario known as the “Big Rip,” in which galaxies, stars ...

From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet ...

For more than a century, gravity has been the stubborn outlier in physics, resisting every attempt to merge Einstein’s smooth ...

So, to create a must-read story list for you, we asked our staff to select their favorite pieces of 2025. Alas, while you're ...

The moon and sun share top billing in 2026. Kicking off the year's cosmic wonders is the moon, drawing the first astronauts ...