Researchers fired laser beams onto a plastic foil to mimic some of the conditions comets encounter as they travel through our solar system and to solve a long-standing mystery.
Happy equinox! The March 20, 2018, equinox is an event that happens on our sky’s dome and a seasonal marker in Earth’s orbit around the sun.
The day arc of the Sun, every hour, during the equinox as seen on the celestial dome, from the pole. Image via Tau?olunga at Wikimedia Commons.
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.