According to the National Weather Service, at 3:20 p.m. EDT today, the Autumnal Equinox (the moment when the length of daylight and darkness are almost perfectly equal) occurs.
A new study indicates that the relatively low mass of Mars allowed most of its water to be lost to space billions of years ago, rather than retained on its surface.
The Inspiration4 crew safely returned to Earth Saturday evening after three days of orbiting the planet. It is the first all-civilian mission to orbit.
The harvest moon is the last full moon of the summer. This year it will appear to be full for three days with peak illumination occurring at 7:54 p.m. ET Monday.
Hubble's iconic images captured the public's imagination. Will NASA's next big space telescope, which sees infrared light, produce astronomy scenes that pack a similar punch?
The Pittsburgh City Council will start implementing a plan to fight light pollution over the next two years. Scientists say light pollution in cities can make groups of stars hard to see.
The first all-civilian space mission into orbit is expected to take flight from Kennedy Space Center on Wednesday evening. Private company SpaceX is running the mission — not NASA.
NASA's Ingenuity helicopter has spent the summer circling around on Mars. Its success has been called an "extra terrestrial Wright Brother's moment" and has opened the door to otherworldly aviation.