In contrast, the term "aphelion" refers to the point where the orbiting body is farthest from the sun. Earth will reach its closest point to the sun, known as perihelion, on Jan. 3, 2026 at 12:15 ...

There are thousands upon thousands of questions related to the topic of astronomy, from the basics of the science to the ...

As New Year’s Day fades, a young moon hangs in the southwest near Venus and Mars. And as the sun sets on the last day of ...

We explore how long it takes to get to Mars and the factors that affect a journey to the Red Planet. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Called C/2024 G3 (ATLAS), the comet made its closest pass to the sun, or perihelion, on Jan. 13, soaring a mere 8 million miles (or 9% of the average Earth-sun distance) from our star. These views ...

The comment, named Comet ATLAS (C/2024 G3), came within 8.3 million miles of the sun on January 13 as it reached its perihelion, or its closest point to the sun. During its close call with the sun ...

Mars, once a planet abundant with water, now lies as a barren, arid expanse. Its surface features reveal a history where water once flowed freely. Over the last three billion years, some of that ...

It’s January 4, 2025, apparently a day for coincidences. One half of the coincidence was a Facebook note on the term “perihelion”—a fancy word for the time the Earth’s orbit ...

In order to investigate the effect of periodic solar radiation on oil vapor diffusion and small breathing losses in dome roof tanks, a theoretical model of unsteady heat and mass transfer in dome ...