Astronomy May 15, 2025 Imaging Earth and the Sky Above It India’s Kutch region offers a combination of unique landscapes and dark skies.
Astronomy May 15, 2025 Explore explosive supernovae from your backyard The ephemeral remnants left behind by exploding stars are some of the most extraordinary objects visible to astronomers here on Earth.
Astronomy May 14, 2025 Deep-Sky Dreams: A great redshift controversy The galaxy NGC 4319 and the quasar Markarian 205 were linked in the mind of famed astronomer Halton Arp.
Astronomy May 14, 2025 Astronomers have discovered the Big Wheel — here's why it's significant This enormous disk object formed soon after the Big Bang, challenging what we know about how galaxies grow.
Astronomy May 14, 2025 Michael’s Miscellany: Coordinates Astronomers developed a system "attached" to the sky.
Astronomy May 14, 2025 Observing Basics Having trouble finding your way around the sky? Curious what that celestial object is? Here's what you need to know to get outside and start...
Astronomy May 13, 2025 Deep-Sky Dreams: The Cat’s Eye Nebula NGC 6543, also called the Cat's Eye Nebula, is a planetary nebula in Draco with a high surface brightness.
Astronomy May 12, 2025 Deep-Sky Dreams Dwarf galaxies are numerous but hard to observe — this one orbits our own Milky Way.
Astronomy May 12, 2025 Deep-Sky Dreams Dwarf galaxies are numerous but hard to observe — this one orbits our own Milky Way.
Astronomy May 12, 2025 Is dew point or relative humidity more important for good astronomical seeing? It really depends on the higher levels of our atmosphere, but a lower dew point is a better starting point for good observing.
Astronomy May 12, 2025 Spacecraft can ‘brake’ in space using drag An aerospace engineer explains why NASA, Space Force and other agencies are using or testing aerobraking for more fuel-efficient spacecraft.
Astronomy May 12, 2025 This Week in Astronomy with Dave Eicher: The Owl Nebula This expanding cloud of gas shows what the Sun will become in 6 billion years.
Astronomy May 12, 2025 These five famous stars in the sky host exoplanets These stars are bright and easy to observe from your backyard — and all of them host planets of their own.
Astronomy May 12, 2025 Deep-Sky Objects Deep-sky objects are celestial objects that exist outside our solar system. Three major types of deep-sky objects are nebulae, star clusters...
Astronomy May 9, 2025 Michael’s Miscellany: Leo the Great This constellation carries the same name as the new pope.
Astronomy May 8, 2025 Deep-Sky Dreams: Gyulbudaghian’s Nebula This strange nebula, which sports a very long name, was discovered in 1977 and has changed dramatically over time.
Astronomy May 8, 2025 10 women who changed astronomy Often bucking tradition, these women sought knowledge of the universe and reimagined the way we view the cosmos.
Astronomy May 8, 2025 Why astronomers are starting to doubt cosmology’s standard model The most recent measurement of a nearby galaxy cluster is deepening a disagreement about how fast the universe is expanding — forcing cosmol...
Astronomy May 7, 2025 Deep-Sky Dreams: The Iris Nebula The Iris Nebula (NGC 7023) is an odd reflection nebula surrounding a magnitude 7.4 star, SAO 19158, in the constellation Cepheus.
Astronomy May 7, 2025 JWST reveals secrets of a sub-Neptune exoplanet New views of TOI-421 b by JWST gives insight into how the most common type of planet in the galaxy might form.
Astronomy May 7, 2025 Michael’s Miscellany: Celebrating David Fabricius This 17th-century astronomer made some key discoveries.
Astronomy May 6, 2025 Deep-Sky Dreams: The Cepheus Molecular Cloud In this new series, Astronomy Editor Dave Eicher will be highlighting a different deep-sky object every day.
Astronomy May 6, 2025 NASA’s SPHEREx space telescope makes its debut The space-based observatory, launched at the end of March, released its first set of images, in which a cloud of dust performs a disappearin...
Astronomy May 6, 2025 Hubble examines a twisted galaxy Arp 184’s single broad arm hints at a unique past, earning it a place in a famous catalog of peculiar galaxies.
Astronomy May 6, 2025 How to use aperture masks for your telescope An aperture mask is a simple device for easier observing that increases the effective focal ratio of a telescope.
Astronomy May 5, 2025 Starmus Festival stretches continents Two occurrences of the world’s greatest science festival took place last month — one in La Palma, Canary Islands, and one in Washington, D.C...
Astronomy May 5, 2025 A speeding pulsar may have ‘broken’ this cosmic bone NASA’s Chandra X-Ray Observatory helped diagnose the cause behind a large kink in a huge filament near the center of the Milky Way.
Astronomy May 5, 2025 This Week in Astronomy with Dave Eicher: Mars and the Beehive Cluster Head out the evening of May 5 to see Mars close to the Beehive Cluster in the constellation Cancer the Crab.
Astronomy May 5, 2025 Remembering Comet Tsuchinshan-ATLAS: The comet of the year Tsuchinshan-ATLAS was that rare type of comet that arrived with fanfare and lived up to the hype, serving up naked-eye views for weeks.
Astronomy May 2, 2025 How much evidence do scientists need to claim they’ve found alien life? How much evidence do scientists need to claim they’ve found alien life?
Astronomy May 2, 2025 How much evidence do scientists need to claim they've found alien life? An astronomer breaks down 3 key components that allow researchers to make groundbreaking discoveries — and decide when results aren’t signif...
Astronomy May 2, 2025 New astronomy products blossoming this month Discover the latest books, telescopes, accessories, and other astronomy products springing up this May.
Astronomy May 1, 2025 World’s biggest solar scope sees sunspots as never before The most advanced instrument on the most powerful solar telescope ever built delivered first-light images with incredible detail.
Astronomy May 1, 2025 Can we detect alien artifacts? SETI’s senior astronomer explains how colossal artifacts could be the key to finding extraterrestrial life, past or present.
Astronomy April 30, 2025 Review: The RedCat 91 is a refractor everyone should want The RedCat 91 is a well-crafted astronomical imaging refractor that is easily portable, with a machined aluminum finish and quality feel.
Astronomy April 30, 2025 New findings suggest dark energy may be changing over time Major survey results now hint that dark energy has evolved across cosmic history, raising questions about the standard model of the universe...
Astronomy April 28, 2025 This Week in Astronomy with Dave Eicher: The Whirlpool Galaxy The Whirlpool Galaxy (M51) offers a chance to see a galaxy collision occurring in the sky. Here's how to view this interacting pair.
Astronomy April 28, 2025 How does the universe make antimatter? Although our universe is mostly normal matter, antimatter isn’t so hard to create — supernovae, black holes, and even bananas can make it.
Astronomy April 25, 2025 Astronomers find a strange pulsar blinking in slow motion PSR J0311+1402 flashes every 41 seconds — quite slow for a pulsar. It could help bridge the gap between fast- and slow-spinning radio source...
Astronomy April 24, 2025 Hubble’s best images, 35 years since its launch In celebration of the 35th anniversary of the legendary space telescope’s launch, here are 35 of our favorite images it has captured.
Astronomy April 24, 2025 Euclid unveils treasure trove of 380,000 galaxies in first major data release In its quest to chart the evolution of the universe, ESA’s space telescope has already amassed a massive catalog of galaxies and gravitation...
Astronomy April 18, 2025 PUNCH sees first light The constellation of four satellites can take both narrow- and wide-field images of the Sun to study its corona and solar wind.
Astronomy April 18, 2025 A dark, dusty pillar stretches across re-released Hubble image The photo of a 9.5-light-year-long cloud within the Eagle Nebula celebrates the space telescope’s upcoming 35th birthday.
Astronomy April 18, 2025 Astronomers find a rare 'dark galaxy' within our Local Group The rotating disk galaxy, mostly made up of dark matter, was discovered within a larger cloud of fast-moving hydrogen gas.
Astronomy April 17, 2025 M83: Big, bright, and beautiful The shining Southern Pinwheel Galaxy (M83) in Hydra checks almost every box an amateur astronomer could desire.
Astronomy April 17, 2025 Milky Way The Milky Way is one of billions of galaxies in the universe and home to our own solar system. It appears as a hazy band in the sky when vie...
Astronomy April 17, 2025 K2-18 b could have dimethyl sulfide in its air. But is it a sign of life? Fresh data from the James Webb Space Telescope provide more evidence for what some consider a biosignature — but debate is sure to follow.
Astronomy April 16, 2025 Vast bolsters commercial space station plans with key agreements The company is developing a commercial replacement for the ISS, currently planned to be retired at the end of the decade.
