Equinox means “equal night.” And you might hear day and night are equal at the equinoxes. Yet Earth’s air and our sun conspire to give us more daylight at an equinox.
Are day and night equal at the equinox?
The moon has now swept past the 2 innermost planets – Venus and Mercury – and Mercury will soon sink into the sunset. Venus still shines brightly in the west after sunset, but the planet focus also shifts to predawn again, to Mars and Saturn …
Skywatcher, by Predrag Agatonovic.
New research suggests that the 1st confirmed interstellar asteroid – called ‘Oumuamua by astronomers – likely came from a system where 2 stars orbit each other.
It’s not surprising that a new study linking extreme winter weather in the U.S. East with a warmer Arctic has drawn fire from global warming skeptics. Should you believe the study or the skeptics?
A snowy morning scene in March 2018 at the Ocean Grove pier in New Jersey. Image via John Entwistle.
NOAA’s 3-month outlook predicts that U.S. will see moderate flooding, and warmer-than-normal temperatures.
Areas of the United States where the average temperature for April-June 2018 is favored to be in the upper (reddish colors) or lower (blue colors) third of the 1981-2010 seasonal temperature record. Within a given area, the intensity of the colors indicates higher or lower chances for a warm or a cool outcome, not bigger or smaller anomalies. For example, both Texas and Tennessee face better than even chances of experiencing well above average spring temperatures, but the chances are higher in Texas (60-70%) than in Tennessee (40-50%). NOAA Climate.gov map, based on data from NOAA CPC.
Wow! So many of you are catching the moon, Venus and Mercury after sunset. Thank you for all your photos. We wish we could post them all!
Where did turtles come from? And how did the they get their shells? The answers to these questions would cause scientists to rethink the entire history of reptile evolution.
Check out the massive cyclones at Jupiter’s north and south poles, on display in stunning new images from the Juno spacecraft.
Composite infrared image from Juno of clusters of massive cyclones surrounding Jupiter’s north pole. Image Credit: NASA/JPL-Caltech/SwRI/ASI/INAF/JIRAM
An analysis of the cosmic microwave background has provided clues about the gas inside vast cosmic voids in space, between giant superclusters of galaxies.
This is a map of the universe within 500 million light years. It shows most of the major galaxy superclusters that surround the Virgo supercluster. These superclusters are not isolated in space but together with many other smaller concentrations of galaxies they form parts of extensive walls of galaxies surrounding large voids. Three of the biggest walls near us are marked on the map as well as several of the largest voids. There are several hundred thousand large galaxies within 500 million light years, so even on this scale our galaxy is a very insignificant object. Image via Atlas of the Universe.