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Galaxies560 articles archived since 1845

Where Would you Leave a Message From the Stars?

A recent article by Samuel Arbesman in the science magazine Nautilus discusses the extraordinary sounding possibility that – just perhaps – a search for extraterrestrial intelligence could be made by looking at our DNA...

April 14, 2015 — Caleb A. Scharf

New Dark Matter Map Confirms Current Theories

The American Physical Society is holding its annual April Meeting at the moment in Baltimore, Maryland, and one of the highlights, research-wise, comes to us courtesy of the Dark Energy Survey (DES) collaboration...

April 13, 2015 — Jennifer Ouellette

Supermassive Black Holes Make Merging Galaxies Green

Green as a color can mean animal, vegetable or mineral. It is the stuff of crocodiles, chlorophyll and copper patina, the essence of serpentine or of snakes in the grass, the hue of a glacial lake, a stagnant pond and the Chicago River on St...

April 3, 2015 — Lee Billings

After a Martian Marathon, NASA's Opportunity Rover Faces Uncertain Future

It's been a long time coming, but this week NASA's Mars Opportunity rover completed the first-ever Martian marathon. After landing on the Red Planet in January 2004 on a mission originally planned to only last 90 days, Opportunity has instead endured for more than a decade, and has taken eleven years and two months to [...]..

March 25, 2015 — Lee Billings

Stars Reveal Hidden Galaxy

A dwarf galaxy near the Milky Way may consist of more dark matter than regular matter.* Clara Moskowitz reports

February 17, 2015 — Clara Moskowitz

Jupiter's Moons Ascending [Images]

Some natural phenomena need few words to explain why they’re fascinating. Eclipses, transits, and phases in astronomy tend to fall into that category.

February 6, 2015 — Caleb A. Scharf

Has An Exomoon Been Found?

Intriguing data from an event in 2007 hints at an exomoon forming around a giant planet in a youthful star system 420 light years from Earth.

January 27, 2015 — Caleb A. Scharf

Planet Hunters Bet Big on a Small Telescope to See Alien Earths

In 1990, NASA's Voyager 1 spacecraft briefly looked back from its journey out of the solar system, capturing a view of the faraway Earth. Carl Sagan called it the "pale blue dot." From more than 6 billion kilometers away, beyond the orbit of Pluto, it seemed remarkable that our planet was even visible...

January 27, 2015 — Lee Billings
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