Venus, often seen as Earth's fiery twin ... Scientists now suggest that the planet may have active tectonic processes. The study focused on large, circular features called coronae.

It suggests that Venus may be more geologically active than previously believed and may help scientists understand why Earth became a habitable planet and Venus did not. Decades-old radar data ...

But NASA's oldest serving astronaut Don Pettit became a septuagenarian while hurtling towards the Earth in a spacecraft to wrap up a seven-month mission aboard the International Space Station (ISS).

But Nasa’s oldest serving astronaut Don Pettit became a septuagenarian while hurtling towards the Earth in a spacecraft to wrap up a seven-month mission aboard the International Space Station (ISS).

But NASA's oldest serving astronaut Don Pettit became a septuagenarian while hurtling towards the Earth in a spacecraft to wrap up a seven-month mission aboard the International Space Station (ISS). A ...

Spending 220 days in space, Don Pettit and his crewmates Alexei Ovchinin and Ivan Vagner orbited the Earth 3,520 times. Cake, gifts and a low-key family celebration may be how many senior citizens ...

Cake, gifts and a low-key family celebration may be how many senior citizens picture their 70th birthday. But Nasa’s oldest serving astronaut Don Pettit became a septuagenarian while hurtling ...