As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

The galaxy cluster known as the "Leo Trio" appears in the early evening sky around the beginning of spring in the Northern Hemisphere in March. The ph... Deadline for medical students to return ...

March 20: Spring Equinox At 5 a.m. ET on March 20, the northern hemisphere will welcome ... and More in December's Night Sky See the First Meteor Shower of the Year, Six Planets in One Night ...

The difference between an equinox and a solstice is based on Earth’s tilt, affecting daylight length and the changing of ...

The Moon will reach perigee, which is the point in its elliptical orbit where it is closest to Earth, on Saturday, March 29.

Created from debris trails from Halley’s Comet, the eta Aquariids can be seen from both the Northern and Southern Hemispheres ...

As the world transitions between seasons, the equinox stands out as a remarkable astronomical occurrence that brings both change and balance to our environment. In this article, we'll explore the ...

On March 29, the Moon is going to enter perigee – the point in its elliptical orbit that brings it closest to Earth.

The seven other planets in our solar system will line up in the night sky on Friday ... A clear sky will also be key—no certainty in the Northern Hemisphere's winter—and being in a dark ...

A partial solar eclipse takes place March 29, but it is strictly a Northern Hemisphere event ... Sirius, the most brilliant star in the night sky, has a magnitude of –1.46.

Meanwhile, at the winter solstice, the Northern Hemisphere is leaning away from the sun — leading to the shortest day and longest night of the year. The winter solstice falls between December 20 ...