Astronomy Magazine

48 articles in the Truth Foundry index. Each links out to the original.

• Jean-Louis Pons Discovers First Comet on July 11, 1801 · French astronomer Jean-Louis Pons discovers his first comet, c/1801 N1, marking the start of his prolific career.
• Dione Passes North of Saturn with Shadow on July 11 · Astronomers can observe Dione passing Saturn's north pole with its shadow crossing the cloud tops.
• 2026 Full Moon Calendar: Buck Moon on July 29 and Complete Schedule · The July 2026 Buck Moon occurs on July 29, with a full schedule of lunar phases and traditional names.
• Astronomer Captures Deep-Sky Nebulae on Cepheus Border with 123-Hour Exposure · Toni Fabiani Méndez captured the Bubble, Wizard, and Elephant Trunk nebulae in Cepheus using a 135mm lens.
• Comet Shoemaker-Levy 9 Disintegrates Near Jupiter in 1992 · Tidal forces from Jupiter shattered Comet Shoemaker-Levy 9 into over 20 fragments in July 1992.
• Asteroid Melpomene Reaches Opposition in Aquila on July 8 · Astronomers can observe asteroid 18 Melpomene all night as it reaches opposition in the constellation Aquila.
• Moon, Saturn, and Neptune Form Triangle in Early-Morning Sky on July 7 · Astronomers observe a rare alignment of the Moon, Saturn, and Neptune in the southeast sky.
• SpaceX Transporter-17, Starlink, and Global Rocket Launches This Week · SpaceX launches Transporter-17 and Starlink missions while China and India attempt debut rocket flights.
• NASA Launches Swift Boost Mission to Rescue Aging Space Telescope · NASA successfully launched Katalyst's LINK spacecraft to rescue the Swift Observatory from decaying orbit.
• Why the Moon's Gravity is 17% of Earth's Despite Being Only 1% of Its Mass · The Moon's smaller size means surface objects are closer to its mass, resulting in higher surface gravity relative to its total mass.
• 1982 El Chichón Eruption Created Unusual Red Lunar Eclipse · The July 6, 1982 lunar eclipse was the longest of the century, colored by volcanic ash from El Chichón.
• Astronomers Guide Viewers to Coma Star Cluster and Saturn on July 6 · The Coma Star Cluster and Saturn are visible in the evening and morning sky respectively on July 6.
• Newton's Principia Published in 1687, Establishing Foundation for Modern Physics · Isaac Newton's Principia, published July 5, 1687, established the laws of motion and universal gravitation.
• Astronomers Guide Viewing of Saturn and Its Moons on July 5 Morning · Titan and other Saturn moons are visible in the early morning sky on July 5.
• Ancient Astronomers Recorded 1054 Crab Nebula Supernova Explosion · A massive star exploded in 1054, creating the Crab Nebula and a visible 'guest star' recorded globally.
• Mars and Uranus Conjunction Visible in Taurus on July 4 Morning · Astronomers can observe a conjunction of Mars and Uranus in Taurus early on July 4.
• Soviet Cosmonaut Andriyan Nikolayev Dies at 79 · Andriyan Nikolayev, a pioneer of the Soviet space program, died in Russia on July 3, 2004.
• Spot the Milky Way's Center Above Sagittarius Tonight · Astronomers guide viewers to locate the Milky Way's center near Sagittarius A* late at night.
• July 3-10 Sky Guide: Mars-Uranus Conjunction, Saturn Moons, and Asteroid Opposition · Astronomers observe Mars and Uranus conjunction, Saturn's moons, and asteroid 18 Melpomene opposition this week.
• Astronomers Locate Wizard Nebula and Young Star Cluster in Cepheus · The Wizard Nebula (NGC 7380) and its bright young star cluster are located in southeastern Cepheus.
• NASA Swift Observatory Gets Boost; South Korea Debuts Military Rocket · NASA extends Swift Observatory life via Pegasus XL launch while South Korea tests new military rocket.
• Mercury Halts in Evening Sky Before Retrograde Motion Begins · Mercury stands still in the evening sky before starting its retrograde loop.
• Astronomer Captures Vulcan Nebula Amidst Galactic Cirrus in Deep-Exposure Image · Piotr Czerski captured the Vulcan Nebula and nearby galaxies using a 2.8-inch telescope and 72.6 hours of data.
• Space Radiation Causes Dangerous Electronic Glitches on Earth · Cosmic rays trigger bit flips in electronics, causing glitches from airplane failures to voting machine errors.
• ISS Air Leaks Prompt Crew Shelter as Commercial Replacements Face Delays · NASA orders ISS crew to shelter due to worsening air leaks in the Russian segment.
• The Moon and Sun's Apparent Size Match is a Rare Cosmic Coincidence · The Moon and Sun appear the same size due to a rare coincidence of distance and diameter.
• French Astronomer Charles Messier Born in 1730, Created Famous Comet Catalog · French astronomer Charles Messier was born in 1730 and compiled a catalog of deep-sky objects to distinguish them from comets.
• Mercury Fades as It Draws Near to Jupiter in Evening Sky · Mercury approaches Jupiter in the evening sky while its brightness diminishes.
• Astronomy Guide: June 26 to July 3 Sky Events and Planetary Alignments · Astronomers observe the Strawberry Moon, Mars near the Pleiades, and Mercury's retrograde start this week.
• Astronomer Captures Faint Oxygen Cloud of Squid Nebula in Cepheus · Luigi La Bella used a 5-inch refractor to image the Squid Nebula (Ou4) within the Flying Bat Nebula.