Together, the instruments have shown that the rate of hydrogen loss is seasonal, with large increases in the escape rate at perihelion, which is Mars' closest point in its orbit around the sun.

Mars has completed another revolution around the Sun and the planet is celebrating a new year with Earth-sent rovers. On ...

Traveling through the farthest passing of Earth and Mars would involve a trip directly through the sun, while spacecraft must of necessity move in orbit around the solar system's star. Although ...

Derived from the Greek words peri (around) and helios (sun), the word reflects its meaning ... "In about 1604, Johannes Kepler fitted an ellipse model of Mars' orbit to observations of Mars ...

Have you noticed Mars has been getting brighter and redder in the past few months? On Sunday, Jan. 12, 2025, Mars will make its closest approach to Earth since 2022 and enter its annual opposition ...

The orbit of Mars stretches to almost 250 million kilometers (155 million miles) from the Sun at its farthest point and it would only be around a meter in change, but it would be measurable.

Additionally, Mars recently passed perigee on Jan. 12, its closest point to Earth in its orbit around the sun, which makes it slightly larger in the sky. The result? A stunning lunar occultation ...

Mars is on the cusp of becoming bigger and brighter than at any point since 2022 as it comes into alignment with Earth and the sun. Have you noticed Mars has been getting brighter and redder in ...