The difference in Earth's distance from the sun at perihelion and aphelion is about 3 million miles (5 million km). That is a little over 3% of the ... Mars," Bloomer told Space.com.

Astronaut Sunita Williams, currently aboard the International Space Station (ISS), is set to witness 16 sunrises and sunsets as 2025 begins. The ISS orbits Earth offering its crew multiple views ...