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Where do stars we see at night come from? Newly confirmed streams of stars – thought to be coming to our Milky Way from other galaxies – suggest not all Milky Way were born here.
Astronomers looked back to a time only 800 million years after the Big Bang and found whirlpool shapes in small, very young galaxies.
Plan ahead now for an awesome year of meteor-watching. Good news! In 2018, the year’s 2 most reliable showers – August Perseids and December Geminids – happen with little to no interference from the moon.
In 2018, scientists hope to obtain the 1st-ever direct image of a black hole’s event horizon. They’re targeting the 4-million-solar-mass black hole at the heart of our Milky Way.
Astronomers and visualization specialists at NASA have just released this unprecedented, 3-dimensional, fly-through view of the Orion Nebula, a nearby star-forming region.
The Curiosity rover has made 2 new and interesting discoveries – the first about methane in Mars’ air and the other about stick-rock formations – both related the possibility of life.
Sun-entry dates to zodiac constellations in 2018, using boundaries for constellations set by International Astronomical Union in 1930s.
Repeating, short, unpredictable radio bursts left astronomers perplexed. Now they think the bursts were twisted by the extreme environment around a supernova or supermassive black hole.
Will 2018 give us a bright comet? There are a couple of possibilities. In the meantime, here are some photos of comets, visible through telescopes, as 2018 begins.
From NASA, here are 10 snowy or icy worlds beyond our own.
This star’s odd, sporadic dimmings and brightenings caused speculation about vast structures built by alien civilizations. But a crowd-funded observing campaign led to a different conclusion.
And now … a big bubble theory. Scientists are discussing the possibility that our solar system formed in wind-blown bubbles around a giant, long-dead star.
January has 2 full supermoons. Earth’s western hemisphere has its 1st one on the 1st full night of 2018. Eastern hemisphere? Your fullest supermoon is January 2.
December solstice 2017 was December 21. Earth is closest to the sun for 2018 on January 2-3. Coincidence?
The New Horizons flyby of Kuiper Belt object 2014 MU69 – a year from today, on January 1, 2019 – will be the most distant in the history of space exploration.
A supermoon’s extra pull of gravity creates higher-than-usual tides. But the moon’s pull doesn’t affect a human body nearly as powerfully as it does an ocean.
The 2018 Quadrantid meteor shower is expected to exhibit its narrow peak January 3 around 21-22 hours UTC. The full supermoon nearly coincides, and moonlight will interfere with the shower.
Here are 7 of the most-viewed news and feature stories of this past year.
A recently discovered giant filament – 2.3 light-years long – points toward Sagittarius A*, the supermassive black hole at our galaxy’s heart.
You’ve probably read about this unprecedented visitor from interstellar space. Astronomer Guy Ottewell thought you’d like to see its trajectory through our solar system.
Contemplate the apex of the sun’s way
Best photos: Morning planets!