Without the constant tug of gravity on our limbs, muscle and bone mass quickly begins to diminish in space. The most affected are those muscles that help to maintain our posture in our back ...

Astronauts experience decreased muscle mass, strength, and endurance because moving around requires reduced work from the legs and back. As a result, the muscles can begin to weaken or atrophy. To ...

Credit: NASA, ESA, CSA, and Joseph Olmsted (STScI) The James Webb Space Telescope is helping scientists study a strange mass about 20 light-years from Earth. Traveling unpredictably through the ...

Violent supernovas may have caused two of Earth’s largest mass extinctions that have never ... using data from the European Space Agency’s Gaia space telescope. The calculations suggested ...