We’re talking about the amount of time needed for the body of the sun to sink below the horizon. It’s true. The sun actually sets faster around the time of an equinox.
Equinox means “equal night.” And you might hear that day and night are equal at the equinoxes. Yet Earth’s air and our sun conspire to give us more day than night at an equinox.
The March 20, 2019, equinox is an event that happens on our sky’s dome and a seasonal marker in Earth’s orbit around the sun.
In the coming evenings, you might glimpse a pale glow on the unlit part of the crescent moon in the west after sunset. It’s called earthshine.
In early March, both Mercury and Mars shine in the west after sunset. Venus, Jupiter and Saturn shine before sunrise.
For Northern Hemisphere skywatchers, it’s the best evening apparition of Mercury in 2019. Now is the best time to look.
It’s still winter in the Northern Hemisphere. As the cold days slowly get longer, a sure sign of spring is already in our skies.
Canopus is the 2nd-brightest star in the sky, and it’s easy to spot on February evenings, if …
A selection of photos of the February 18 and 19 full moon – biggest and brightest supermoon of 2019 – from the EarthSky Community.
Never-before-seen footage of night skies over the HAARP antenna array in remote northern Alaska.
The rate of fireballs – or bright meteors – has been observed to go up in the Northern Hemisphere by as much as 30% from February through April. Will it this year?
Fast-moving comet C/2018 Y1 (Iwamoto) will pass closest to us – 28 million miles away – on February 12. Charts and more here.
This 3rd episode of an ongoing stargazing video series – called Chasing Darkness – is from Yellowknife, Canada. It features the magnificent northern lights.
February evenings are a great time to see Sirius. It’s hard to miss the brightest star in Earth’s sky. More about the Dog Star, plus how to spot it
The zodiacal light is an eerie light extending up from the horizon. This is a good time of year to see it in the evening, from the Northern Hemisphere. Southern Hemisphere, look before dawn!
Groundhog Day is tied to the movement of Earth around the sun. Falling approximately midway between a solstice and an equinox, it’s the year’s 1st cross-quarter day.
Here’s the 2nd video in the Chasing Darkness series, a stargazing destination guide. This episode: Skies over Oregon’s Cascade Mountains and Alvord Desert.
Astronomer Guy Ottewell shares insights and charts related to the current moon phase.
One Earth. One sky. One moon phase (more or less) from all of Earth. So why (and how) does the moon look different from different parts of Earth?
Check it out. You can see the flash of a meteorite that struck the moon during Sunday night’s total eclipse. Photos and video here.
Storm in a cosmic teacup