Astronomy

Here, we study of astronomy from a Christian perspective.

Haumea of the Outer Solar System

One of the strangest objects in the outer Solar System has recently been found to have a ring. The object, named Haumea, is the fifth designated dw

GW170817: A Spectacular Multi-Radiation Merger Ev...

Both gravitational and electromagnetic radiations have been detected in rapid succession for an explosive merging event for the first time. Data fr

All-Sky Steve

Familiar green and red tinted auroral emission floods the sky along the northern (top) horizon in this fish-eye panorama projection from September 27

Under the Galaxy

The Large Magellanic Cloud, a satellite galaxy of the Milky Way, stands above the southern horizon in this telephoto view from Las Campanas Observato

NGC 1365: Majestic Island Universe

Barred spiral galaxy NGC 1365 is truly a majestic island universe some 200,000 light-years across. Located a mere 60 million light-years away towar

Star Cluster NGC 362 from Hubble

If our Sun were near the center of NGC 362, the night sky would glow like a jewel box of bright stars. Hundreds of stars would glow brighter than S

Milky Way and Zodiacal Light over Australian Pinn...

What strange world is this? Earth. In the foreground of the featured image are the Pinnacles, unusual rock spires in Nambung National Park in Weste

Unusual Mountain Ahuna Mons on Asteroid Ceres

Ahuna Mons is the largest mountain on the largest known asteroid in our Solar System, Ceres, which orbits our Sun in the main asteroid belt between

Dark Molecular Cloud Barnard 68

Where did all the stars go? What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud. Here, a high concen

Global Aurora at Mars

A strong solar event last September triggered intense global aurora at Mars. Before (left) and during (right) the solar storm, these projections sh

Pluto's Bladed Terrain

Imaged during the New Horizons spacecraft flyby in July 2015, Pluto's bladed terrain is captured in this close-up of the distant world. The bizarre t

Two Comets and a Star Cluster

Two unusual spots are on the move near the famous Pleiades star cluster. Shifting only a small amount per night, these spots are actually comets in

Portrait of NGC 281

Look through the cosmic cloud cataloged as NGC 281 and you might miss the stars of open cluster IC 1590. The eye-catching shapes looming in this po

Puppis A Supernova Remnant

Driven by the explosion of a massive star, supernova remnant Puppis A is blasting into the surrounding interstellar medium about 7,000 light-years aw

LIGO-Virgo GW170814 Skymap

From around planet Earth three gravitational wave detectors have now reported a joint detection of ripples in spacetime, the fourth announced detecti

Massive Shell-Expelling Star G79.29+0.46

Stars this volatile are quite rare. Captured in the midst of dust clouds and visible to the right and above center is massive G79.29+0.46, one of l

How to Identify that Light in the Sky

What is that light in the sky? Perhaps one of humanity's more common questions, an answer may result from a few quick observations. For example

A Conjunction of Comets

A conjunction of comets is captured in this pretty star field from the morning of September 17. Discovered in July by a robotic sky survey searching

A September Morning Sky

The Moon, three planets, and a bright star gathered near the ecliptic plane in the September 18 morning sky over Veszprem Castle, Hungary. In this tw

Veil Nebula: Wisps of an Exploded Star

Wisps like this are all that remain visible of a Milky Way star. Some time ago that star exploded in a supernova leaving the Veil Nebula. At the ti

Orion above Easter Island

Why were the statues on Easter Island built? No one is sure. What is sure is that over 800 large stone statues exist there. The Easter Island statu

Bright Spiral Galaxy M81

One of the brightest galaxies in planet Earth's sky is similar in size to our Milky Way Galaxy: big, beautiful M81. This grand spiral galaxy ca

NGC 6334: The Cat's Paw Nebula

Nebulas are perhaps as famous for being identified with familiar shapes as perhaps cats are for getting into trouble. Still, no known cat could hav

Europa and Jupiter from Voyager 1

What are those spots on Jupiter? Largest and furthest, just right of center, is the Great Red Spot -- a huge storm system that has been raging on J

Saturn's Rings from the Inside Out

What do Saturn's rings look like from Saturn? Images from the robotic spacecraft Cassini are providing humanity with this unprecedented vantage

A Waterspout in Florida

What's happening over the water? Pictured here is one of the better images yet recorded of a waterspout, a type of tornado that occurs over water.

Saturn in Blue and Gold

Why is Saturn partly blue? The featured picture of Saturn approximates what a human would see if hovering close to the giant ringed world. The imag

The Heart Nebula in Hydrogen, Oxygen, and Sulfur

What powers the Heart Nebula? The large emission nebula dubbed IC 1805 looks, in whole, like a heart. The nebula's glow -- as well as the shape

The Eagle and The Swan

The Eagle Nebula and the Swan Nebula span this broad starscape, a telescopic view toward the Sagittarius spiral arm and the center of our Milky Way

Milky Way over Chilean Volcanoes

Sometimes, the sky mimics the ground. Taken in 2017 May from the Atacama Desert in Chile, the foreground of the featured image encompasses the dipp

NGC 2442: Galaxy in Volans

Distorted galaxy NGC 2442 can be found in the southern constellation of the flying fish, (Piscis) Volans. Located about 50 million light-years away

Perseid by the Sea

Just after moonrise on August 12 this grain of cosmic sand fell by the sea, its momentary flash part of the annual Perseid Meteor Shower. To create t

Charon Flyover from New Horizons

What if you could fly over Pluto's moon Charon -- what might you see? The New Horizons spacecraft did just this in 2015 July as it zipped past Pluto

Detailed View of a Solar Eclipse Corona

Only in the fleeting darkness of a total solar eclipse is the light of the solar corona easily visible. Normally overwhelmed by the bright solar di

Gravity's Grin

Albert Einstein's general theory of relativity, published over 100 years ago, predicted the phenomenon of gravitational lensing. And that's

North North Temperate Zone Little Red Spot

On July 11, the Juno spacecraft once again swung near the turbulent Jovian cloud tops. On its seventh orbital closest approach this perijove passage

Pelican Nebula Close-up

The prominent ridge of emission featured in this vivid skyscape is designated IC 5067. Part of a larger emission region with a distinctive shape, p

The Dust Monster in IC 1396

Is there a monster in IC 1396? Known to some as the Elephant's Trunk Nebula, parts of gas and dust clouds of this region may appear to take on

Pluto Flyover from New Horizons

What if you could fly over Pluto -- what might you see? The New Horizons spacecraft did just this in 2015 July as it shot past the distant world at

A Total Eclipse at the End of the World

Would you go to the end of the world to see a total eclipse of the Sun? If you did, would you be surprised to find someone else there already? In 2

Aurora Slathers up the Sky

Like salsa verde on your favorite burrito, a green aurora slathers up the sky in this June 25 snapshot from the International Space Station. About

Noodle Mosaic of Saturn

On April 26 the Cassini spacecraft swooped toward Saturn on the first of its Grand Finale dives between Saturn and rings. In this long, thin, noodl

A Sagittarius Triplet

These three bright nebulae are often featured on telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky

The Milky Way over Monument Valley

You don't have to be at Monument Valley to see the Milky Way arc across the sky like this -- but it helps. Only at Monument Valley USA would yo

Mercury as Revealed by MESSENGER

Mercury had never been seen like this before. In 2008, the robotic MESSENGER spacecraft buzzed past Mercury for the second time and imaged terrain

Apollo 11: Catching Some Sun

Bright sunlight glints and long dark shadows mark this image of the lunar surface. It was taken July 20, 1969 by Apollo 11 astronaut Neil Armstrong,

Phobos: Moon over Mars

A tiny moon with a scary name, Phobos emerges from behind the Red Planet in this timelapse sequence from the Earth-orbiting Hubble Space Telescope.

IC 1396: Emission Nebula in Cepheus

Stunning emission nebula IC 1396 mixes glowing cosmic gas and dark dust clouds in the high and far off constellation of Cepheus. Energized by the b

Ireson Hill on Mars

What created this unusual hill on Mars? Its history has become a topic of research, but its shape and two-tone structure makes it one of the more u

Thunder Moon over Pisa

What's wrong with this picture? If you figure it out, you may then realize where the image was taken. The oddity lies actually in one of the bu

Moon Shadow versus Sun Reflection

What are those lights and shadows crossing the Earth? As the featured five-second time-lapse video progresses, a full day on planet Earth is depict

Lightning Eclipse from the Planet of the Goats

Thunderstorms almost spoiled this view of the spectacular 2011 June 15 total lunar eclipse. Instead, storm clouds parted for 10 minutes during the

Close-up of The Great Red Spot

On July 11, the Juno spacecraft once again swung near to Jupiter's turbulent cloud tops in its looping 53 day orbit around the Solar System'

Full Moon and Boston Light

This well-planned telephoto timelapse captures July's Full Moon rise across outer Boston Harbor, Massachusetts, planet Earth. In the foreground

Messier 63: The Sunflower Galaxy

A bright spiral galaxy of the northern sky, Messier 63 is about 25 million light-years distant in the loyal constellation Canes Venatici. Also cata

Star Cluster Omega Centauri in HDR

Behold the largest ball of stars in our galaxy. Omega Centauri is packed with about 10 million stars and packed within a volume of only about 150 l

Spiral Galaxy NGC 1512: The Nuclear Ring

What's happening around the center of this spiral galaxy? Seen in total, NGC 1512 appears to be a barred spiral galaxy -- a type of spiral that

Earth at Night

Can you find your favorite country or city? Surprisingly, on this world-wide nightscape, city lights make this task quite possible. Human-made ligh

Hidden Galaxy IC 342

Similar in size to large, bright spiral galaxies in our neighborhood, IC 342 is a mere 10 million light-years distant in the long-necked, northern

A View Toward M106

Big, bright, beautiful spiral, Messier 106 dominates this cosmic vista. The two degree wide telescopic field of view looks toward the well-trained

Atlas, Daphnis, and Pan

Atlas, Daphnis, and Pan are small, inner, ring moons of Saturn, shown at the same scale in this montage of images from the still Saturn-orbiting Ca

Aphelion Sunrise

On July 3rd, planet Earth reached aphelion, the farthest point in its elliptical orbit around the Sun. Each year, this day of the most distant Sun

The Summer Triangle over the Great Wall

Have you ever seen the Summer Triangle? The bright stars Vega, Deneb, and Altair form a large triangle on the sky that can be seen rising in the no

3D Lava Falls of Mars

Get out your red/cyan glasses and gaze across lava falls of Mars. The stereo anaglyph was created by combining two images recorded by the HiRISE ca

NGC 7814: The Little Sombrero in Pegasus

Point your telescope toward the high flying constellation Pegasus and you can find this expanse of Milky Way stars and distant galaxies. Dominated

Symbiotic R Aquarii

A long recognized naked-eye variable star, R Aquarii is actually an interacting binary star system, two stars that seem to have a close, symbiotic

Composite Messier 20 and 21

The beautiful Trifid Nebula, also known as Messier 20, lies about 5,000 light-years away, a colorful study in cosmic contrasts. It shares this near

The M81 Galaxy Group through the Integrated Flux ...

Distant galaxies and nearby nebulas highlight this deep image of the M81 Group of galaxies. First and foremost in this 80-exposure mosaic is the gr

Artistic Impression: The Surface of TRAPPIST-1f

If you could stand on the surface of the newly discovered Earth-sized exoplanet TRAPPIST-1f, what would you see? Presently, no Earthling knows for

The N44 Superbubble

What created this gigantic hole? The vast emission nebula N44 in our neighboring galaxy the Large Magellanic Cloud has a large, 250 light-year hole

Markarian's Chain to Messier 64

Top to bottom, this colorful and broad telescopic mosaic links Markarian's Chain of galaxies across the core of the Virgo Cluster to dusty spir

Solstice Conjunction over Budapest

Before a solstice Sun rose on June 21, brilliant Venus and an old crescent Moon posed together over Budapest, Hungary for this predawn skyscape. In

Northern Summer on Titan

While yesterday's solstice brought summer to planet Earth's northern hemisphere, a northern summer solstice arrived for ringed planet Saturn nearly a

A Sundial that Shows Solstice

What day is it? If the day -- and time -- are right, this sundial will tell you: SOLSTICE. Only then will our Sun be located just right for sunligh

The Massive Stars in Westerlund 1

Star cluster Westerlund 1 is home to some of the largest and most massive stars known. It is headlined by the star Westerlund 1-26, a red supergian

Views from Cassini at Saturn

What has the Cassini orbiter seen at Saturn? The featured music video shows some of the early highlights. In the first time-lapse sequence (00:07),

Saturn near Opposition

Saturn reached its 2017 opposition on June 16. Of course, opposition means opposite the Sun in Earth's sky and near opposition Saturn is up all

Manhattan Moonrise

A Full Moon rose as the Sun set on June 9, known to some as a Strawberry Moon. Close to the horizon and taking on the warm color of reflected sunligh

Red Sprites over the Channel

Mysterious and incredibly brief, red sprites are seen to occur high above large thunderstorms on planet Earth. While they have been recorded from l

The Great Nebula in Carina

In one of the brightest parts of Milky Way lies a nebula where some of the oddest things occur. NGC 3372, known as the Great Nebula in Carina, is h

M89: Elliptical Galaxy with Outer Shells and Plum...

Can you see them? This famous Messier object M89, a seemingly simple elliptical galaxy, is surrounded by faint shells and plumes. The cause of the

Saturn in the Milky Way

Saturn is near opposition in planet Earth's sky. Rising at sunset and shining brightly throughout the night, it also lies near a line-of-sight

Firefall by Moonlight

On certain dates in February, an elusive firefall can be spotted at sunset in Yosemite National Park, when the weather cooperates and the direction

Orbiting Jupiter

What would it be like to orbit Jupiter? The dramatic featured video depicts just this and

Is the sun getting brighter?

Through internal nuclear reactions, hydrogen atoms inside the Sun are converted into helium atoms all the time. Over time, this causes a change in

Where do Leonids come from?

In mid-November each year, our Earth passes through the remains of the tail of Comet Tempel-Tuttle. These remains are a bunch of rocks floating in

Where do Perseids come from

Beginning in the late July and peaking around August 12th each year, the earth passes through the remains of the tail of a comet called Comet Swift

Nicolaus Copernicus Biography

His father died when Nicolaus was 10 years old. So he was taken care of by his uncle Lucas Waczenrode, a clergyman. At age 15, his un

What is a red-shift?

Here is a picture of the electromagnetic spectrum.

Light as a wave and as a particle

What is light? To be truthful, it's a mystery. We don't really know what it is. But, throughout the years, we learned some things about it.

Legacy of Tycho Brahe as an astronomer

Tycho Brahe was a nobleman from an important Danish family. During his university years, he was studying law. But his real passion was mathematics

How is the composition of a space object determine...

When an electron in an atom drops from one energy level to another, it gives off a specific amount of energy. It turns out that each element in the

What is the north star?

All the visible stars in the night sky change locations. They move from east to west with seasons. But one star appears to be in the

Number of satellites orbiting the earth

There are around 13,000 artificial satellites circling our planet. They are monitored by the U.S. government. As of early 2013, 1046

What is Dark Matter?

Dark matter is... dark, as in something you can't see, as in something we are clueless about. The idea of dark matter is not anyt

Organization of the cosmos

The stuff of the cosmos is organized in units we call galaxies. Galaxies consist of stars, planets, and nebulae. Dense concentrations of stars are

What's a Doppler Effect?

Doppler effect is stretching or compression of a wave as it moves. A good illustration would be to listen to a car zoom by you. As the car passes y

Electromagnetic Spectrum

The electronmagnetic spectrum is an array of light waves of different wavelengths. A wavelength is the distance between consecutive peaks of a wave

The Big Bang Theory: Current Dilemmas

This article explores the realistic challanges an early universe would experience if it tried exploding out of itself in the beginning.

When are the meteor showers?

When are the meteor showers, and what causes them