TEHRAN (ANA)- Russian cosmonauts have now completed a total of 176 spacewalks, with 75 conducted as part of the Russian program aboard the International Space Station (ISS), Roscosmos announced, highlighting their significant contribution to global extravehicular activities.

TEHRAN (ANA)- NASA scientists say they have confirmed the universe’s first known example of a starless, gas-rich object governed primarily by dark matter, a discovery that offers fresh insight into how galaxies form—and fail.

TEHRAN (ANA)- Two recently detected black hole mergers, observed just a month apart in late 2024, have given scientists their most precise test yet of Einstein’s general relativity.

TEHRAN (ANA)- New research from UBC Okanagan mathematically demonstrates that the universe cannot be simulated.

TEHRAN (ANA)- Dark-energy evidence suggests the universe will end in a “big crunch” roughly 20 billion years from now.

TEHRAN (ANA)- MIT researchers have found rare remnants of the planet that existed before Earth’s catastrophic formation.

TEHRAN (ANA)- A new paper presents a method for distinguishing between different sources of nanohertz gravitational waves.

TEHRAN (ANA)- Our Milky Way is far from calm — it ripples with a colossal wave spanning tens of thousands of light-years, revealed by ESA’s Gaia telescope.

TEHRAN (ANA)- Researchers have unveiled a new model for the universe’s birth that replaces cosmic inflation with gravitational waves as the driving force behind creation.

TEHRAN (ANA)- Researchers have discovered chemical fingerprints of Earth's earliest incarnation, preserved in ancient mantle rocks.