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cancer cells
Science Wire | May 21, 2013

Scientists develop new tumor-killer

Scientists from Nanyang Technological University (NTU) and Lund University, Sweden, have bioengineered a novel molecule which has been proven to successfully kill tumor cells.

Upper level low responsible for the chilly weather across the Southeast on May 4, 2013. Image Credit: NOAA
Blogs | May 08, 2013

Chilly start to May in U.S. Southeast

Temperatures have been well below average for the Southeast United States for the first half of May 2013. Here’s why.

Via moonsmuses.com
FAQs | May 01, 2013

Why do we celebrate May Day?

Happy May Day! A few words about this annual celebration, whose roots are in astronomy.

Image Credit: Arenamontanus
FAQs | Apr 29, 2013

What exactly is twilight?

Twilight is the time of day between daylight and darkness. Astronomers, the experts on nighttime, recognize three kinds of twilight.

UGA researchers.  Image via Minh Phan.
Blogs | Apr 27, 2013

Social media used to study April 27, 2011 tornadoes in U.S. Southeast

University of Georgia researchers used a Facebook page to determine the trajectories of tornado debris.

Bushcricket
Science Wire | Apr 05, 2013

Ultrasonic sounds of the rainforest

New research aimed at developing ultrasonic microphones with insect-like sensitivity will continue in the rainforests of Colombia and Ecuador.

Image credit: darksky.org
Blogs | Mar 28, 2013

Death Valley designated as an International Dark Sky Park

On February 20, 2013, Death Valley National Park earned designation as an International Dark Sky Park for its pristine views of the starry nighttime sky.

Wisdom's new chick on March 5, 2013.  Photo via USFWS
Blogs | Mar 12, 2013

Oldest known albatross Wisdom hatches a new chick

At 62, the Laysan albatross Wisdom is one of the oldest wild birds known to be living in the world today. Yes, her new chick is adorable.

j_holliman image tornado mississippi
Blogs | Feb 10, 2013

Large tornado hits Hattiesburg, Mississippi

Amazing pictures and video from Hattiesburg, Mississippi as a large tornado strikes the city on February 10, 2013.

Just one big field of brotherly love.  Image via Kelly
Blogs | Feb 04, 2013

Dogs do it. Dolphins do it. Now corn, too, displays altruism.

Researchers studying corn seeds have found evidence that full “siblings” preferentially feed each other. They describe this behavior as altruism among corn.

Image Credit: Nicholas_T
Blogs | Jan 31, 2013

Stormy weather is no match for microbes

Hearty microorganisms float in the harsh air of hailstorms and hurricanes.

Artist's impression of the gas and dust disk around the young star TW Hydrae. New measurements using the Herschel space telescope have shown that the mass of the disk is greater than previously thought. Image credit: Axel M. Quetz (MPIA)
Science Wire | Jan 30, 2013

There’s more to astronomers’ favorite planetary nursery than previously thought

Astronomers have used a new method to determine the mass of the planetary nursery around the star TW Hydrae.At a distance of merely 176 light-years from Earth, this is the closest star that is currently forming new planets.

Image credit: Tatiana Makotra/Shutterstock
Science Wire | Oct 29, 2012

New study sheds light on how and when vision evolved

A new study used computer modelling to shed light on the origin of sight in animals, including humans.

Aurora from space on October 8, 2012 via NASA
Blogs | Oct 10, 2012

View from space: Aurora stretching across Quebec and Ontario on October 8

Orbiting satellite acquired view of an aurora, seen from above, on October 8, 2012. These northern lights resulted from a storm on the sun several days earlier.

Harvest Moon September 29 via Suzanne Dos Passos
Blogs | Sep 30, 2012

Favorite Harvest Moon photos from friends in 2012

A gallery of some of our favorite pictures of the 2012 Harvest Moon from our EarthSky Facebook friends.

Photo credit: Jussarian
Blogs | Sep 14, 2012

Where are the hottest places on Earth?

“Where’s the hottest place on Earth” is a contentious issue. Some contenders: Iran’s Lut Desert, China’s Turpan Basin and the badlands in Queensland, Australia.

682715main_isaac_night_800-600
Blogs | Sep 06, 2012

A look back at Hurricane Isaac

As of now, it appears that Isaac caused the deaths of nearly 40 people and will result in at least $3 billion in damages.

Capricorn-Large
Tonight | Sep 03, 2012

Capricornus? Here’s your constellation

The constellation Capricornus the Sea-goat. How to see it, and a word about its mythology.

See complete map below
Blogs | Aug 21, 2012

July 2012 was fourth-warmest July globally since 1880

July 2012 was the fourth straight month in which the Northern Hemisphere set a new monthly land temperature record. It was the fourth-warmest July globally.

Sunspot grouping 1520 and July 12 X-flare.
Blogs | Jul 12, 2012

X-flare from giant sunspot group 1520

Giant sunspot group 1520 – which spans about 10 Earth diameters on the sun’s surface – emitted an X-flare on July 12 at 1653 UTC.

Arctic sea ice June 2002 versus June 2012.
Blogs | Jun 20, 2012

As summer 2012 begins, Arctic ice is melting fast

In 2007, we saw the smallest Arctic summertime ice extent since record keeping began. As summer 2012 begins, ice is melting faster now than at this same time in 2007.

Noctilucent clouds, Estonia. Image credit: Martin Koitmä.
Blogs | Jun 16, 2012

The secrets of night shining clouds

After sunset, when the sun is below the horizon but visible from the clouds’ high altitude, sunlight illuminates them, causing them to glow in a dark night sky.

The remains of Joplin High School one year after the deadly EF-5 tornado pushed through the city. Image Credit: Daniel Dix
Blogs | May 22, 2012

One-year anniversary of Joplin, Missouri tornado tragedy

Joplin tornado of May 22, 2011 was deadliest single U.S. tornado since 1950 and costliest tornado in world history. See videos. Learn how Joplin is rebuilding.

Virgourania
Tonight | May 03, 2012

Virgo? Here’s your constellation

The constellation Virgo the Maiden fully returns to the early evening sky – with her feet planted on the eastern horizon – by late April or early May.

Photo credit: Anne Froehlich
Blogs | Apr 16, 2012

More emperor penguin colonies in Antarctica

Good news for penguin lovers! New satellite images show that there are twice as many emperor penguins in Antarctica than previously thought.

Tornados in Texas April 3, 2012. Image Credit: NWS
Blogs | Apr 05, 2012

Recap and videos of April 3, 2012 tornadoes in Texas

At least 11 confirmed tornadoes struck the Dallas-Fort Worth area on April 3, causing damage but no deaths. Here’s what’s known now, plus the best videos.

10-degree Map Centered at 10°N,125°E
Blogs | Feb 06, 2012

At least 15 dead, many missing, after February 6 Philippines earthquake

A 6.7 magnitude earthquake rocked the Philippines on February 6, 2012 killing at least 15 people, with many still missing.

LRO image of Apollo 17 site. Image credit: NASA/GSFC/ASU.
Blogs | Jan 08, 2012

Look for alien artifacts on moon, says renowned scientist

If extra-terrestials visited the moon, they may have left tell-tale signs. It’s worth a look, says a leading scientist, and won’t cost much.

Sunset in early fall making the entire landscape appear red. Image Credit: Matt Daniel
Blogs | Dec 16, 2011

Beautiful sunrises and sunsets!

Favorite pics of sunrises and sunsets – with an explanation of why they’re so beautiful! Post your sunrise and sunset images on EarthSky’s Facebook page.

celegans_2011_1
Blogs | Nov 30, 2011

Tiny worms might help humans get to Mars

While in space, 12 generations of worms were found to reproduce and develop from egg to adulthood no differently than they would on Earth.

Pecan pie via Wikimedia Commons
Blogs | Nov 23, 2011

How your brain cells might be sabotaging your diet

Our brain cells munch on themselves, to keep the body from starving. A new study sheds light on the role this plays in regulating appetite.

Robots that can human expressions
Blogs | Nov 20, 2011

EarthSky 22: Robots with human faces

Featured this week, lifelike robots – plus lakes on Jupiter’s moon and an eclipse of the midnight sun. Song of the week from Ocote Soul Sound.

Image Credit: Southwest Research Institute
Blogs | Nov 14, 2011

Was a fifth gas giant ejected from our solar system?

Earth might have been spared from a collision with Mars or Venus by the process in which a fifth giant world was ejected from our solar system.

haboob in Lubbock, TX
Blogs | Oct 18, 2011

Massive dust storm hits Lubbock, Texas

A haboob – an enormous dust storm – swept through parts of Lubbock, Texas on the evening of Monday, October 17, 2011.

Image Credit: IvanWalsh.com
Blogs | Sep 14, 2011

Fish farms less harmful than thought, says study

Coastal fish farms seem to do less harm to nearby plants and animals than previously believed, a new study reveals.

Smoke over Austin at midday, September 7, 2011.
Blogs | Sep 07, 2011

Texas wildfires still burning as winds die down

The largest of the Texas fires – the Bastrop fire near Austin in Central Texas – is said to be 30 percent contained today.

Visible satellite  imagery of tropical storm Irene.  Image Credit:  National Hurricane Center
Blogs | Aug 28, 2011

Where is Irene now?

UPDATE: Sunday, August 28, 5:40 p.m. EDT (21:40 UTC). Tropical Storm Irene has been gradually weakening and is beginning to lose tropical characteristics.

Image Credit: Western Arctic National Parklands
Blogs | Jul 28, 2011

After 10,000 year absence, wildfires have returned to Arctic tundra

The huge stock of carbon contained in tundra could increase atmospheric CO2 drastically, when released by a fire.

Tropical storm Arlene forms in Gulf of Mexico June 27, 2011.
Blogs | Jun 29, 2011

Watch clouds gather to form tropical storm Arlene

Watch a video that shows tropical storm Arlene as it forms in the Gulf of Mexico on June 27, 2011.

Image Credit: Crazy Creatures
Blogs | Jun 29, 2011

Loggerhead turtles’ movements predictable, says study

A ten-year study shows that loggerhead turtles go back to the same spots year after year.

Image Credit: NASA, ESA, et al
Blogs | Jun 27, 2011

In early universe, galaxies were awake or asleep, says study

Astronomers captured light from 40,000 galaxies and discovered that even in the early universe, galaxies were either awake or asleep.

girl_child_school_student
Blogs | Jun 19, 2011

Why are 160 million girls missing from Asia?

Growing scarcity of girls and women has tilted the balance of the sexes and the rich and poor in nations where “gendercide” is practiced on a large scale.

Photo credit: cybaea
Blogs | Jun 16, 2011

Two types of perception linked in surprising way

The mind is a great statistician, say psychologists studying two types of perception.

facebook_map_small
Blogs | Dec 14, 2010

Facebook map of the world

This Facebook map of the world shows the connections between about 10 million friends.

gemenids_meteor_shower_300
Blogs | Nov 08, 2010

EarthSky 22 Minutes: November 8, 2010

November meteor showers, a frozen zoo, butterfly medicine, a Bill of Rights for aliens – plus some great music – all this week on EarthSky 22.