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Solstice Conjunction over Budapest

APOD - Sat, 06/24/2017 - 9:07am

Solstice Conjunction over Budapest Solstice Conjunction over Budapest


Northern Summer on Titan

APOD - Fri, 06/23/2017 - 9:07am

While yesterday's solstice brought summer to planet Earth's While yesterday's solstice brought summer to planet Earth's


A Sundial that Shows Solstice

APOD - Thu, 06/22/2017 - 9:07am

What day is it? What day is it?


The Massive Stars in Westerlund 1

APOD - Wed, 06/21/2017 - 9:07am

Star cluster Westerlund 1 is home to some of the largest and most massive stars known. Star cluster Westerlund 1 is home to some of the largest and most massive stars known.


Eclipse Across America: Path Prediction Video

APOD - Tue, 06/20/2017 - 9:07am

Where will you be during the Where will you be during the


Views from Cassini at Saturn

APOD - Mon, 06/19/2017 - 9:07am

What has the Cassini orbiter seen at Saturn? What has the Cassini orbiter seen at Saturn?


Saturn near Opposition

APOD - Sun, 06/18/2017 - 9:07am

Saturn reached its 2017 opposition on June 16. Saturn reached its 2017 opposition on June 16.


Manhattan Moonrise

APOD - Sat, 06/17/2017 - 9:07am

Manhattan Moonrise Manhattan Moonrise


Red Sprites over the Channel

APOD - Fri, 06/16/2017 - 9:07am

Mysterious and incredibly brief, red sprites are Mysterious and incredibly brief, red sprites are


M89: Elliptical Galaxy with Outer Shells and Plumes

APOD - Thu, 06/15/2017 - 9:07am

Can you see them? Can you see them?


The Great Nebula in Carina

APOD - Wed, 06/14/2017 - 9:07am

In one of the brightest parts of In one of the brightest parts of


An Unusual Hole in Mars

APOD - Tue, 06/13/2017 - 9:07am

What created this unusual hole in Mars? What created this unusual hole in Mars?


IC 418: The Spirograph Nebula

APOD - Mon, 06/12/2017 - 9:07am

What is creating the strange texture of IC 418?  What is creating the strange texture of IC 418?


Saturn in the Milky Way

APOD - Sun, 06/11/2017 - 9:07am

Saturn in the Milky Way Saturn in the Milky Way


M27 Not a Comet

APOD - Sat, 06/10/2017 - 9:07am

While hunting for comets in the skies above 18th century France, While hunting for comets in the skies above 18th century France,


Firefall by Moonlight

APOD - Fri, 06/09/2017 - 9:07am

On certain dates in February, an elusive firefall On certain dates in February, an elusive firefall


Orbiting Jupiter

APOD - Thu, 06/08/2017 - 9:07am

What would it be like to orbit Jupiter? What would it be like to orbit Jupiter?


Ingredient of life found around infant Sun-like stars

Science Daily - Thu, 06/08/2017 - 7:29am
ALMA has observed stars like the Sun at a very early stage in their formation and found traces of methyl isocyanate -- a chemical building block of life. This is the first ever detection of this prebiotic molecule towards solar-type protostars, the sort from which our Solar System evolved. The discovery could help astronomers understand how life arose on Earth.

Celestial boondocks: Study supports the idea we live in a void

Science Daily - Wed, 06/07/2017 - 2:29pm
A new study not only firms up the idea that we exist in one of the holes of the Swiss cheese structure of the cosmos, but helps ease the apparent disagreement between different measurements of the Hubble Constant, the unit cosmologists use to describe the rate at which the universe is expanding today.

Century-old relativity experiment used to measure a white dwarf's mass

Science Daily - Wed, 06/07/2017 - 2:26pm
Astronomers have used the sharp vision of NASA’s Hubble Space Telescope to repeat a century-old test of Einstein’s general theory of relativity. The team measured the mass of white dwarf Stein 2051 B, the burned-out remnant of a normal star, by seeing how much it deflects the light from a background star. The gravitational microlensing method data provide a solid estimate of the white dwarf’s mass and yield insights into theories of the structure and composition of the burned-out star.

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