Day and night are mostly equal on the equinox. There's a bit more daylight because the sun is a disk, not a point, and Earth’s atmosphere refracts sunlight.
Sun activity for September 21, 2023, is moderate with an M8 flare. Earth's geomagnetic field has quietened down, but may become active over the next day.
The Psyche mission will launch on October 5, 2023, on a mission to explore the metal-rich asteroid Psyche. Learn more about the mission and asteroid here.
The year's fastest sunsets are at the equinoxes, and the slowest are at the solstices. We're talking about how long it takes the sun to sink below the horizon.