Free Republic

Explanation: Magnificent spiral galaxy NGC 4565 is viewed edge-on from planet Earth. Also known as the Needle Galaxy for its narrow profile, bright NGC 4565 is a stop on many telescopic tours of the northern sky, in the faint but well-groomed constellation Coma Berenices. This sharp, colorful image reveals the galaxy's boxy, bulging central core cut by obscuring dust lanes that lace NGC 4565's thin galactic plane. NGC 4565 lies around 40 million light-years distant while the spiral galaxy itself spans some 100,000 light-years. That's about the size of our own Milky Way. Easily spotted with small telescopes, deep sky...

Explanation: How soon do jets form when a supernova gives birth to a neutron star? The Africa Nebula provides clues. This supernova remnant surrounds Circinus X-1, an X-ray emitting neutron star and the companion star it orbits. The image, from the ThunderKAT collaboration on the MeerKAT radio telescope situated in South Africa, shows the bright core-and-lobe structure of Cir X-1’s currently active jets inside the nebula. A mere 4600 years old, Cir X-1 could be the "Little Sister" of microquasar SS 433*. However, the newly discovered bubble exiting from a ring-like hole in the upper right of the nebula, along...

NASA’s TESS has uncovered two rocky Earth-sized planets around a nearby star, including one super-Earth with an Earth-like interior and extraordinary density. Image credit: Canva | The Daily Galaxy --Great Discoveries Channel Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have confirmed the discovery of two rocky exoplanets orbiting a nearby K-type star, designated TOI-2322. The results, published on August 25, 2025, in a detailed paper on arXiv, highlight how the ongoing TESS mission continues to expand the catalog of known worlds beyond our solar system, with particular interest in planets that share characteristics with Earth. The TESS Mission And...

Explanation: The Horsehead Nebula is one of the most famous nebulae on the sky. It is visible as the dark indentation to the orange emission nebula at the far right of the featured picture. The horse-head feature is dark because it is really an opaque dust cloud that lies in front of the bright emission nebula. Like clouds in Earth's atmosphere, this cosmic cloud has assumed a recognizable shape by chance. After many thousands of years, the internal motions of the cloud will surely alter its appearance. The emission nebula's orange color is caused by electrons recombining with protons to...

My name is Joe Owen. I head up the worldwide languages ministry at Answers in Genesis.That's Charlie Duke. There were nine missions to the moon. I worked on five of them. In 1978, I became a born again Christian.I came to faith on January 19, 1988. I was selected by NASA in 1996, and I flew four times—once on the space shuttle going to the space station and then three expeditions, each about six months long.Many times, I am introduced as an astronaut, but if I were to describe myself, I certainly wouldn't call myself an astronaut, because the way...

A potent cannibal solar storm has hit Earth and could put on a spectacular northern lights display across the U.S tonight. A fast-moving coronal mass ejection (CME), launched by a long-duration M2.7 flare from sunspot AR 4199 on Aug. 30, slammed into Earth's magnetic field around 5 p.m. EDT (2100 GMT) on Sept. 1, according to NOAA's Space Weather Prediction Center (SWPC). The CME is likely to spark a G2 (moderate) to G3 (strong) geomagnetic storm, with a chance of reaching G4 (severe) levels, according to NOAA and the U.K. Met Office. That means auroras could extend much farther south...

Explanation: Its surface is the most densely cratered in the Solar System -- but what's inside? Jupiter's moon Callisto is a battered ball of dirty ice that is larger than the planet Mercury. It was visited by NASA's Galileo spacecraft in the 1990s and 2000s, but the recently reprocessed featured image is from a flyby of NASA's Voyager 2 in 1979. The moon would appear darker if it weren't for the tapestry of light-colored fractured surface ice created by eons of impacts. The interior of Callisto is potentially even more interesting because therein might lie an internal layer of liquid...

Explanation: What created this unusual planetary nebula? Dubbed the Pillow Nebula and the Flying Carpet Nebula, NGC 7027 is one of the smallest, brightest, and most unusually shaped planetary nebulas known. Given its expansion rate, NGC 7027 first started expanding, as visible from Earth, about 600 years ago. For much of its history, the planetary nebula has been expelling shells, as seen in blue in the featured image by the Hubble Space Telescope. In modern times, though, for reasons unknown, it began ejecting gas and dust (seen in brown) in specific directions that created a new pattern that seems to...

Explanation: A young crescent moon can be hard to see. That's because when the Moon shows its crescent phase (young or old) it can never be far from the Sun in planet Earth's sky. But even though the sky is still bright, a slender sunlit lunar crescent is clearly visible in this early evening skyscape. The telephoto snapshot was captured on August 24, with the Moon very near the western horizon at sunset. Seen in a narrow crescent phase about 1.5 days old, the visible sunlit portion is a mere two percent of the surface of the Moon's familiar nearside....

It started with a quiver deep down in the Martian crust weak, barely detectable, yet bearing 4.5-billion-year-old echoes. Those seismic waves, recorded by NASA's InSight lander from 2018 to 2022, have revealed a remarkable discovery: giant preserved fragments of Mars' primordial crust, trapped in the planet's mantle since the formation of the Solar System.The discovery emerged from the painstaking analysis of eight exceptionally clear marsquake events by a team led by Constantinos Charalambous of Imperial College London. Using the Seismic Experiment for Interior Structure (SEIS), InSight recorded how primary (P) and secondary (S) waves traveled through the planet, reflecting and...

Explanation: The diffuse hydrogen-alpha glow of emission region Sh2-27 fills this cosmic scene. The field of view spans nearly 3 degrees across the nebula-rich constellation Ophiuchus toward the central Milky Way. A Dark Veil of wispy interstellar dust clouds draped across the foreground is chiefly identified as LDN 234 and LDN 204 from the 1962 Catalog of Dark Nebulae by American astronomer Beverly Lynds. Sh2-27 itself is the large but faint HII region surrounding runaway O-type star Zeta Ophiuchi. Along with the Zeta Oph HII region, LDN 234 and LDN 204 are likely 500 or so light-years away. At that...

Explanation: This well-composed telescopic field of view covers over a Full Moon on the sky toward the high-flying constellation Pegasus. Of course the brighter stars show diffraction spikes, the commonly seen effect of internal supports in reflecting telescopes, and lie well within our own Milky Way galaxy. The faint but pervasive clouds of interstellar dust ride above the galactic plane and dimly reflect the Milky Way's starlight. Known as galactic cirrus or integrated flux nebulae they are associated with the Milky Way's molecular clouds. In fact, the diffuse cloud cataloged as MBM 54, less than a thousand light-years distant, fills...

This image, which combines infrared data from the James Webb Space Telescope with submillimeter observations from the Atacama Large Millimeter/submillimeter Array (ALMA), shows the doughnut-shaped torus and interconnected bubbles of dusty gas that surround the Butterfly Nebula’s central star. The torus is oriented vertically and nearly edge-on from our perspective, and it intersects with bubbles of gas enclosing the star. The bubbles appear bright red in this image, illuminated by the light from helium and neon gas. Outside the bubbles, jets traced by emission from ionized iron shoot off in opposite directions. (Credit: ESA/Webb, NASA & CSA, M. Matsuura, ALMA...

Both the James Webb Space Telescope and NASA’s Jet Propulsion Laboratory observatory SPHEREx snapped new images of 3I/ATLAS this week, almost two months after it was first spotted in the skies above Chile. 3I/ATLAS glows red in the new images with a seemingly threatening aura, though most scientists believe the object to be merely a 12-mile-wide interstellar comet. The snaps showed that 3I/ATLAS is “outgassing” as it approaches the Sun, which was expected. However, the object is dumping out a conspicuous amount of carbon dioxide and a surprisingly small amount of water and carbon monoxide, according to experts, including Harvard...

Explanation: That yellow spot -- what is it? It's a young planet outside our Solar System. The featured image from the Very Large Telescope in Chile surprisingly captures a distant scene much like our own Solar System's birth, some 4.5 billion years ago. Although we can't look into the past and see Earth's formation directly, telescopes let us watch similar processes unfolding around distant stars. At the center of this frame lies a young Sun-like star, hidden behind a coronagraph that blocks its bright glare. Surrounding the star is a bright, dusty protoplanetary disk -- the raw material of planets....

100% sucess

In recent years, researchers led by Abel Méndez—lead author of the new study and director of the Planetary Habitability Laboratory at the University of Puerto Rico—have contributed significantly to that evidence through the AWOW project. In August 2024, Méndez and his colleagues published findings that suggest the Wow! Signal stemmed from the sudden brightening of a cold hydrogen cloud due to a transient source of radiation such as a magnetar. These neutron stars have magnetic fields strong enough to excite the atoms in hydrogen clouds and elicit a burst of brightness. Re-evaluating the Wow! Signal Now, Méndez’s team has meticulously...

Explanation: What's hovering above the Sun? A solar prominence. A prominence is a crest of hot gas expelled from the Sun's surface that is held aloft by the Sun's magnetic field. Prominences can last for days, can suddenly explode into space, or just fall back to the Sun. What decides a prominence's fate is how the Sun's complex magnetic field changes -- the field's direction can act like an offramp for trapped solar particles. The 3-second (repeating) time-lapse featured video was captured earlier this month from Ottawa, Ontario, Canada. It shows the development of a larger-than-Earth prominence as it appears...

For decades, astronomers have searched for signs of extraterrestrial intelligence using radio telescopes and optical instruments, scanning the skies for artificial signals. Now, researchers are taking a different approach, this time looking much closer to home for alien artefacts that might already be in our Solar System. A new study published in Monthly Notices of the Royal Astronomical Society describes an innovative method for detecting potential extraterrestrial probes near Earth. Their approach; to use Earth's shadow as a natural filter to eliminate interference from human-made satellites and space debris. Modern skies are cluttered with thousands of satellites and millions of...

Explanation: Sometimes even the sky surprises you. To see more stars and faint nebulosity in the Pleiades star cluster (M45), long exposures are made. Many times, less interesting items appear on the exposures that were not intended -- but later edited out. These include stuck pixels, cosmic ray hits, frames with bright clouds or Earth's Moon, airplane trails, lens flares, faint satellite trails, and even insect trails. Sometimes, though, something really interesting is caught by chance. That was just the case a few weeks ago in al-Ula, Saudi Arabia when a bright meteor streaked across during an hour-long exposure of...