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The night we nearly saw a 'blood moon' (and why I love near-misses in astronomy)
Stargazers have trigger words — total, bright, peak, maximum, best.
NASA telescope honors Nancy Grace Roman, architect of space-based astronomy
The Nancy Grace Roman Space Telescope is set to launch this weekend aboard a SpaceX rocket from Kennedy Space Center in Florida. When it becomes operational early next year, it will transform our view of the universe.
Meeting Nancy Grace Roman: What was the 'mother of Hubble' really like?
Nearly a decade ago, I found myself laughing alongside one of the most iconic women in astronomy.
Comet 220P McNaught puts on an encore performance
It has been a busy month for astronomy. In the midst of an eclipse season bookended by the total solar eclipse on Aug. 12 and the deep partial lunar eclipse coming up this week on Aug. 28, an outbound comet hanging high in the dawn sky just refuses to die: 220P/McNaught.
APOD: 2026 August 22 – Mostly Perseids
APOD Science APOD APOD: 2026 August 22… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief e
APOD: 2026 August 24 – Comet 220P in Outburst
APOD Science APOD APOD: 2026 August 24 – Comet… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a
LST-1 and MAGIC telescopes shatter distance record for the very high-energy blazar OP 313
On Aug. 15, the CTAO LST Collaboration and the MAGIC Collaboration released findings from observations of OP 313, the most distant very-high-energy blazar ever recorded. The paper, published in Astronomy & Astrophysics, presents in-depth observations conducted with the prototype
APOD: 2026 August 31 – Launch of the Roman Space Telescope
APOD Science APOD APOD: 2026 August 31 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos!
NASA launches first telescope named after female scientist
The Nancy Grace Roman Space Telescope, named after NASA's first Chief of Astronomy, will observe black holes, exoplanets and exploding stars.
APOD: 2026 August 28 – The Sky Turns Above Paranal
APOD Science APOD APOD: 2026 August 28 – The… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos!
APOD: 2026 August 27 – Colorful Aurora over an Icelandic Waterfall
APOD Science APOD APOD: 2026 August 27 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos!
Chance gaze at old Hubble Telescope image leads to discovery that could reveal dark matter's secrets
In late June 2023, on a morning train commuting to work in New York City, David Hendel was scrolling through a recent astronomy paper on his phone when a half-page image caught his eye.
APOD: 2026 August 26 – JWST Images The Lion’s Head Nebula
APOD Science APOD APOD: 2026 August 26 – JWST… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos!
Roman telescope aims to directly image exoplanets 1,000 times fainter than current limits
The Roman Space Telescope is designed to directly image exoplanets using complex optomechanical systems developed by the Max Planck Institute for Astronomy
Astronomers discover hot watery exoplanet destined to be swallowed by its star
Astronomers have discovered a new ocean world outside the solar system that orbits extremely close to its parent star.
It's been 20 years since Pluto lost planet status. Will it ever get its title back?
In August of 2006, astronomers at the International Astronomical Union (IAU) democratically voted to reclassify Pluto as a dwarf planet — but 20 years later, with our greater knowledge and understanding of planetary systems, is it time to revisit the controversial decision? Shoul
The earliest galaxy 'swallowed' by the cannibal Milky Way left a scar at its heart
The Milky Way has something of a torrid and violent history, given that our galaxy has fueled its own growth by cannibalistically devouring smaller galaxies. Now, astronomers have discovered evidence of our galaxy's earliest bout of cannibalism in the form of "scarring" at the he
What happens when a galaxy's supermassive black hole turns off? These dying radio galaxies could show us
Astronomers have discovered a hitherto unseen population of so-called "radio galaxies" with fading "radio lobes." The discovery reveals what happens when the supermassive black hole engines that power these vast, blooming outflows of plasma stall. This discovery increases our und
'Dark stars' could be the seeds of supermassive black holes, scientists say
A mysterious hum of gravitational waves that fills the cosmos may be the echo of "dark stars" that served as the seeds of the first supermassive black holes. These low-frequency gravitational waves were detected back in 2023 using an array of cosmic lighthouses, or pulsars , in a
Could 'dark photons' explain dark matter?
New research suggests that if dark matter is composed of "dark photons," it would not have heated the early cosmos like scientists previously thought. If correct, this discovery could represent a paradigm shift in the hunt for the universe's most mysterious stuff. Dark matter rem