Remove Ads

Martian Moon Eclipses Martian Moon

Copyright: What if there were two moons in the sky — and they eclipsed each other? This happens on Mars. The featured video shows a version of this unusual eclipse from space. Pictured are the two moons of Mars: the larger Phobos, which orbits closer to the red planet, and the smaller Deimos, which orbits […]

A Phoenix Aurora over Iceland

Copyright: Hallgrimur P. Helgason; Rollover Annotation: Judy Schmidt All of the other aurora watchers had gone home. By 3:30 am in Iceland, on a quiet September night, much of that night’s auroras had died down. Suddenly, unexpectedly, a new burst of particles streamed down from space, lighting up the Earth’s atmosphere once again. This time, […]

To the Moon

Copyright: Intuitive Machines’ robotic lander Odysseus has accomplished the first U.S. landing on the Moon since the Apollo 17 mission in 1972. Launched on a SpaceX rocket on February 15, the phone booth sized lander reached lunar orbit on the 21st and touched down on the lunar surface at 6:23 pm ET on February 22nd. […]

The Pencil Nebula Supernova Shock Wave

Copyright: Helge Buesing This supernova shock wave plows through interstellar space at over 500,000 kilometers per hour. Centered and moving upward in the sharply detailed color composite its thin, bright, braided filaments are actually long ripples in a cosmic sheet of glowing gas seen almost edge-on. Discovered in the 1840s by Sir John Herschel, the […]

A View Toward M106

Copyright: Kyunghoon Lim Big, bright, beautiful spiral, Messier 106 dominates this cosmic vista. The nearly two degree wide telescopic field of view looks toward the well-trained constellation Canes Venatici, near the handle of the Big Dipper. Also known as NGC 4258, M106 is about 80,000 light-years across and 23.5 million light-years away, the largest member […]

Seagull Nebula over Pinnacles’ Peak

Copyright: Dheera Venkatraman The bird is bigger than the peak. Nicknamed for its avian shape, the Seagull Nebula is an emission nebula on the night sky that is vast, spanning an angle over five times the diameter of the full moon and over 200 light years. The head of the nebula is catalogued as IC […]

AM1054: Stars Form as Galaxies Collide

Copyright: When galaxies collide, how many stars are born? For AM1054-325, featured here in a recently released image by the Hubble Space Telescope, the answer is millions. Instead of stars being destroyed as galaxy AM1054-325 and a nearby galaxy circle each other, their gravity and motion has ignited stellar creation. Star formation occurs rapidly in […]

Looking Sideways from the Parker Solar Probe

Copyright: What’s happening near the Sun? To help find out, NASA launched the robotic Parker Solar Probe (PSP) to investigate regions closer to the Sun than ever before. The PSP’s looping orbit brings it nearer to the Sun each time around — every few months. The featured time-lapse video shows the view looking sideways from […]

Hoag’s Object: A Nearly Perfect Ring Galaxy

Copyright: Is this one galaxy or two? This question came to light in 1950 when astronomer Arthur Hoag chanced upon this unusual extragalactic object. On the outside is a ring dominated by bright blue stars, while near the center lies a ball of much redder stars that are likely much older. Between the two is […]

Meteor over the Bay of Naples

Copyright: Wang Letian A cosmic dust grain plowing through the upper atmosphere much faster than a falling leaf created this brilliant meteor streak. In a serendipitous moment, the sublime night sky view was captured from the resort island of Capri, in the Bay of Naples, on the evening of February 8. Looking across the bay, […]

Structure in the Tail of Comet 12P/Pons-Brooks

Copyright: Dan Bartlett Heading for its next perihelion passage on April 21, Comet 12P/Pons-Brooks is growing brighter. The greenish coma of this periodic Halley-type comet has become relatively easy to observe in small telescopes. But the bluish ion tail now streaming from the active comet’s coma and buffeted by the solar wind, is faint and […]

Copyright: Courtesy of NASA Astronomy Picture of the Day

A January Wolf Moon

Copyright: Antoni Zegarski Did you see the full moon last month? During every month, on average, a full moon occurs in the skies over planet Earth. This is because the Moon takes a month to complete another orbit around our home planet, goes through all of its phases, and once again has its entire Earth-facing […]

HFG1 & Abell 6: Planetary Nebulae

Copyright: Julien Cadena & Mickael Coulon; Text: Natalia Lewandowska (SUNY Oswego) Planetary nebulae like Heckathorn-Fesen-Gull 1 (HFG1) and Abell 6 in the constellation Cassiopeia are remnants from the last phase of a medium sized star like our Sun. In spite of their shapes, planetary nebulae have nothing in common with actual planets. Located in the […]

Rocket Plume Shadow Points to the Moon

Copyright: Why would the shadow of a rocket’s launch plume point toward the Moon? In early 2001 during a launch of the space shuttle Atlantis, the Sun, Earth, Moon, and rocket were all properly aligned for this photogenic coincidence. First, for the space shuttle’s plume to cast a long shadow, the time of day must […]