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Astronomers find earliest example of merging galaxies

Astronomy Magazine - Mon, 06/17/2019 - 04:00
Thirteen billion years ago, two galaxies collided to make something totally new. Each of those galaxies was among the universe’s first, since the cosmic clock had only been ticking for less than a billion years. As the galaxies’ dust and gas swirled together, new generations of stars were born, and their light began racing across the cosmos until it collided with the 66 radio telescopes that make up the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile’s Atacama Dese
Categories: Astronomy

Vaporizing meteors are making clouds on Mars

Astronomy Magazine - Mon, 06/17/2019 - 04:00
Scientists have tracked the seeds of high-altitude clouds to "meteoric smoke" caused when space rocks crash into the Red Planet's atmosphere.
Categories: Astronomy

What's so special about our Moon, anyway?

Astronomy Magazine - Mon, 06/17/2019 - 04:00
There are many moons in the solar system. And although Earth's Moon may not be the biggest or most active, it still has an interesting story.
Categories: Astronomy

The Sky This Week from June 14 to 23

Astronomy Magazine - Fri, 06/14/2019 - 04:00
Mercury and Mars appear closer to each other in the evening sky than they have in more than a decade, while the Moon slides past both Jupiter and Saturn.
Categories: Astronomy

Light pollution from satellites will get worse. But how much?

Astronomy Magazine - Fri, 06/14/2019 - 04:00
Vast constellations of human-made objects in the sky could increase light pollution, interfere with radio signals, and contribute to the growing issue of space debris.
Categories: Astronomy

As the hunt drags on, physicists start searching for the lightest dark matter

Astronomy Magazine - Fri, 06/14/2019 - 04:00
As dark matter experiments continue to come up empty, scientists are refocusing their hunts on smaller projects and smaller potential particles.
Categories: Astronomy

Scientists ask the public to help search for a rare breed of black hole

Astronomy Magazine - Fri, 06/14/2019 - 04:00
Elusive intermediate-mass black holes may hold clues to how their more common supermassive cousins form.
Categories: Astronomy

The Milky Way still bears scars from a collision with a ghostly galaxy

Astronomy Magazine - Thu, 06/13/2019 - 04:00
The recently discovered dwarf galaxy Antlia 2 may be the cause of strange ripples in the Milky Way’s outer disk.
Categories: Astronomy

Propellers, waves, and gaps: Cassini's last looks at Saturn's rings

Astronomy Magazine - Thu, 06/13/2019 - 04:00
Cassini's final dive through Saturn's rings gave us a wealth of details about small structures that reveal big facts about how the rings formed and evolve.
Categories: Astronomy

NASA is retiring its legendary Spitzer Space Telescope

Astronomy Magazine - Thu, 06/13/2019 - 04:00
Spitzer has studied the infrared sky since 2003. Now NASA says it will retire the flagship "Great Observatory" in 2020.
Categories: Astronomy

Dark matter may have punched a hole in the Milky Way

Astronomy Magazine - Wed, 06/12/2019 - 04:00
A wrecking ball of dark matter 5 million times the mass of the Sun may be the best explanation for a disrupted stream of stars.
Categories: Astronomy

The briny depths of Europa brim with table salt

Astronomy Magazine - Wed, 06/12/2019 - 04:00
Astronomers have found table salt on Europa’s surface, a clue to the chemistry of the moon’s underground ocean — including its potential for hosting life.
Categories: Astronomy

Powerful superflares could pose a threat to Earth

Astronomy Magazine - Tue, 06/11/2019 - 04:00
Young and active stars often experience wildly strong eruptions. Now we know our older, calmer Sun may occasionally throw similar tantrums.
Categories: Astronomy

There's an enormous, mysterious mass under the Moon's largest crater

Astronomy Magazine - Tue, 06/11/2019 - 04:00
Astronomers suggest it may be an asteroid that hit the Moon billions of years ago.
Categories: Astronomy

Global astronomy groups say they’re concerned about SpaceX’s Starlink satellites

Astronomy Magazine - Tue, 06/11/2019 - 04:00
Elon Musk’s plans for a global satellite internet are bold, but astronomers worry the craft might overwhelm and ultimately outnumber visible stars.
Categories: Astronomy

The Sky This Week from June 7 to 16

Astronomy Magazine - Fri, 06/07/2019 - 04:00
Jupiter reaches opposition and peak visibility this week. The giant planet shines brightest, looms largest, and remains visible throughout these short nights.
Categories: Astronomy

Lunar tales: The first (imaginative) Moon landings

Astronomy Magazine - Fri, 06/07/2019 - 04:00
Although humans didn't really reach the Moon until a half century ago, we've ventured there in our minds for millennia.
Categories: Astronomy

Particle colliders help prep humans for deep space radiation

Astronomy Magazine - Fri, 06/07/2019 - 04:00
By smashing together heavy particles at high speeds, scientists can study the types of radiation an astronaut would encounter in space.
Categories: Astronomy

Astronomers spot ‘ridge’ of plasma linking galaxy clusters

Astronomy Magazine - Thu, 06/06/2019 - 04:00
These merging clusters have a special connection that’s never been seen before.
Categories: Astronomy

The mystery of cosmic cold spots just got even weirder

Astronomy Magazine - Thu, 06/06/2019 - 04:00
During its time in orbit, the European Space Agency’s Planck spacecraft gave humanity the most sophisticated measurements ever made of the cosmic microwave background (CMB) radiation, the first flash of light that rippled across the universe after the Big Bang. Plank told us the shape of the universe and confirmed crucial components of the Big Bang as it collected data between 2009 and 2013. It did all that by measuring the intensity of the CMB across the sky. And since then astronomers ha
Categories: Astronomy

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