Mastodawn

Happy Winter Solstice, which will occur at 15:03 UTC (10:03 a.m. EST) today.

Today, earth's axis, which is currently tilted 23.44° from the plane of its orbit around the Sun (the ecliptic), will point away from the Sun.

It is the shortest day of the year in the northern hemisphere; which means that days will keep getting longer starting tomorrow 🥳

Below are images of Earth taken 6 days ago (Dec 21, 2025) and on June 19, 2025 near the last Summer Solstice, from the direction of the Sun.

The tilt of earth's axis at these two extreme points can be seen clearly.

These images were taken by the NASA DSCOVR satellite, which is located 1.5 million km away at the Sun-Earth L1 Lagrange point.

@AkaSci These two pictures prove it: the equator can be seen from space!
🤗