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When is the first day of fall? The autumnal equinox, explained
It’s fall ya’ll! Sweater weather is upon us. The beginning of the autumn season marks the end of warm summer days and the start of longer chilly nights.
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Across the Northern Hemisphere, now's the time to catch a new comet before it vanishes for 400 years
A newly discovered comet is swinging through our cosmic neighborhood for the first time in more than 400 years.
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Rare blue supermoon brightens the night sky this week in the closest full moon of the year
The cosmic curtain rises Wednesday night with the second full moon of the month, the reason it’s considered blue.
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Everything to know about the rare super blue moon, which rises this week
A super blue moon will be visible Wednesday night for the first time since 2018. Here’s how you can see it in the sky.
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What is light pollution? An Arlington planetarium helps explain the night sky
On this Science 4 Everyone, Storm Team4 Meteorologist (and Science Teacher!) Ryan Miller explains the types of light pollution and how it clouds D.C.’s view of the night sky.
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What's the difference between a meteoroid, meteor and meteorite?
On this Science 4 Everyone, meteorologist (and Science Teacher!) Ryan Miller shares fun facts about the meteors that streak brightly across the evening sky.
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Perseid meteor shower peaks this weekend
The Perseid meteor shower is one of the most intense displays of shooting stars every year
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Perseid meteor shower lights up night skies across the world
The annual Perseid meteor shower reaches its peak this weekend. The best viewing will be from Saturday night into early Sunday morning, when viewers might be able to spot a meteor per minute.
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Two supermoons in August mean double the stargazing fun
The cosmos is offering up a double feature in August: a pair of supermoons. Catch the first show Tuesday night as the full moon rises in the southeast.
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Astronomers discover first evidence of two planets sharing the same orbit
Astronomers reported Wednesday the discovery of what could be two planets sharing the same orbit around their star.
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Northern Lights forecast changes, unlikely to be seen in most US states on Thursday
Sorry stargazers, it looks like the Northern Lights won’t be seen in most of the U.S. after all.
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The first supermoon of 2023 will be visible Monday. Here's how to see it.
This week’s supermoon, also known as the Buck Moon, is set to rise on Monday.
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What to Know About June's Full Moon, Nicknamed ‘Strawberry Moon'
June’s full moon, set to occur Saturday, is known as the “Strawberry Moon,” a post from the Old Farmers Almanac says. But it’s not necessarily because of the moon’s reddish color.
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This Stunning Mosaic of Baby Star Clusters Was Created From 1 Million Telescope Shots
The observations, conducted from 2017 to 2022, will help researchers better understand how stars evolve from dust.
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Astronomers Discover Ultramassive Black Hole
A team of astronomers has discovered the largest black hole in the universe, which is over 30 billion times the mass of our Sun.
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Planets on Parade: 5 Will Be Lined Up in Night Sky This Week
There’s a special chance this week to see five planets lined up in the night sky.
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Planets on Parade: 5 Will Be Lined Up in Night Sky This Week
There’s a special chance this week to see five planets lined up in the night sky.
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‘City Killer' Asteroid Will Fly Between Earth and the Moon This Weekend
An asteroid big enough to wipe out a city will zip harmlessly between Earth and the moon’s orbit this weekend. Saturday’s close encounter will offer astronomers the chance to study a space rock from just over 100,000 miles away. That’s less than half the distance from here to the moon. While asteroid flybys are common, NASA says a big one...
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Perihelion: Why the Earth Gets Closest to the Sun in January
Perihelion — when the sun and earth are nearest each other — occurs every winter. So, why is it still so cold outside? Storm Team4 Meteorologist Ryan Miller explains.