April 25, 2022
The first eclipse season of 2022 starts with a partial eclipse on April 30. It ends with a total lunar eclipse May 15-16.
March 26, 2022
[Alex on EARTHSKY.ORG] Solar filaments (aka prominences, when viewed on the limb of the sun) are large, bright arcs of solar material and magnetic fields.
March 19, 2022
YAY! Another change of season is here. The 2022 March Equinox happens on March 20, 2022 at 15:33 UTC (11:33 am EDT • 8:33 am PDT)
March 14, 2022
[Alex on EARTHSKY.ORG] Lots of fun with the Sun lately. A coronal mass ejection slammed into Earth and gave weekend aurora. Then the Sun fired off a moderate solar flare.
January 1, 2022
On January 4, 2022, at 1:52 a.m. EST (6:52 UTC), Earth's orbit will be at our closest point to the Sun for the year.
December 18, 2021
It is the 2021 December Solstice! [ycd_countdown id=15609] 15:58 GMT • 10:58 am EST • 9:58 am CST • 8:58 MST • 7:58 am PST Convert Your Timezone A new season is upon us! Depending upon where you live: OR […]
December 4, 2021
A total solar eclipse was visible in Antarctica! Check out the recap and replay of the event. Image credit: Mathew Schwartz (2017)
November 17, 2021
During the early morning hours of November 19 or late evening hours of November 18, depending on your location and time zone, the full moon will pass through Earth's dark or inner shadow (umbra) creating a deep partial lunar eclipse.
November 6, 2021
The Sun is really really big! It is difficult to get a true feel for how big it is because nothing in our daily life comes even close.
November 4, 2021
[Alex on EARTHSKY.ORG] Aurora alert in effect for the next few days: the sun sent out a halo coronal mass ejection on November 2, 2021, due to arrive at Earth on November 4.
October 30, 2021
[Alex on EARTHSKY.ORG] A solar storm after an eruption on the sun is carrying plasma toward Earth, which should produce northern and southern lights this weekend.
September 22, 2021
WHOOO HOO! It’s a change of season! The next Equinox occurs on September 22, 2021 at 19:21 UTC (3:21 p.m. EDT • 12:21 p.m. PDT). It’s the Autumnal (Fall) equinox for the Northern Hemisphere! It’s the Vernal (Spring) equinox for […]