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The Iris Nebula is a reflection nebula in Cepheus. A popular target with amateur astronomers, the sourrounding flux nebulas are harder to photograph and require long integration times. Also visible in this wide-field image, near the bottom left, is the Ghost Nebula. Click or tap to enlarge/double-tap to zoom
over a year ago

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More from Light from Space

Andromeda: Our Galactic Neighbor

Many things have been said about the Andromeda Galaxy, arguably the most majestic galaxy that amateur astronomers can image due to it's sheer size in the sky—many times larger than the Moon appears to us, but also many times dimmer. With the naked eye, even in

9 months ago 78 votes
The Fossil Footprint Nebula

A rarely imaged target as it is very dim. This image took me over 50h of total exposure time. Total exposure time: 52h 40' Image resolution: 4,490 × 4,552px (0.96″/px) Shot from my driveway near Tucson, AZ in late 2023 Telescope: William Optics RedCat

a year ago 58 votes
The Rosette Nebula

Next to the Orion Nebula, the Rosette Nebula is definitely a must-do on the list of every aspiring astrophotographer. Located not too far from Orion in Monoceros, this large H II region has spectacular features, centered around a star cluster. Click or tap to enlarge/double-tap to zoom My image

over a year ago 43 votes
The Helping Hand of LDN 1355

LDN 1355 is a dark nebula in Cassiopeia, vaguely in the shape of an outstreched human hand—the dark dust obscuring the reflection nebula behind it. Total exposure time: 58h 50' (211,800s) Image resolution: 5,216 × 3,909px (1.924″/px) Shot from my driveway

over a year ago 46 votes
The Soul of the Heart Nebula

A spectacular emission Nebula, the Heart Nebula is one of the classics of Northern Hemisphere amateury astronomy. In the gallery below, I've highlighted 3 very different areas of the image: Left: Planetary Nebula WeBo-1 Middle: Melotte 15 in the... heart of the Heart Nebula Right: The “Fish

over a year ago 46 votes

More in science

The latest on US science funding

The US House and Senate appropriations subcommittees have now completed their markups on the bills relevant to the FY26 appropriations for NSF, NASA, and NIST.  The AAAS has an interactive dashboard with current information here if you want to click and look at all the science-related agencies.   Other agencies still need to go through the Senate subcommittees.  Just a reminder of how this is supposed to work.  The House and Senate mark up their own versions of the detailed appropriations bills.  In principle these are passed by each chamber (with the Senate versions for practical purposes requiring 60/100 votes of support because of the filibuster).  Then a conference committee hashes out the differences between the bills, and the conference version of the bills is then voted on by each chamber (again, needing 60/100 votes to pass in the Senate).  Finally, the president signs the spending bills.  In the fantasy land of Schoolhouse Rock, which largely described events until the 1990s, these annual spending bills are supposed to be passed in time for the start of the new fiscal year on October 1.  In practice, Congress has been deeply dysfunctional for years, and there have been a lot of continuing resolutions, late budgets, and mammoth omnibus spending bills.   To summarize: NSF - House recommendation = $6.997B (a 20.7% cut from FY25), Senate = $9B (a 2% increase from FY25).  These are in sharp contrast to the presidential budget request (PBR) of a 55.8% cut. NASA - House = flat from FY25, Senate = $24.9B (0.2% increase).   NIST - House = $1.28B (10.6% increase from FY25), Senate = $1.6B (38.3% increase from FY25) NOAA - House = $5.7B (28.3% increase from FY25), Senate = $6.1B (36.3% increase from FY25) DOE has gone through the House, where the Office of Science is recommending a 1.9% increase, in contrast to a 13.9% cut in the PBR.   If you are eligible and able to do so, please keep pushing.  As I wrote a few days ago, this is a long-term project, since appropriations happen every year.  As long as you're making your opinions known, it's good to push on representatives and senators that they need to hold the agency leadership accountable to actually spend what congress appropriates.  A science post soon....

11 hours ago 3 votes
How Distillation Makes AI Models Smaller and Cheaper

Fundamental technique lets researchers use a big, expensive “teacher” model to train a “student” model for less. The post How Distillation Makes AI Models Smaller and Cheaper first appeared on Quanta Magazine

15 hours ago 2 votes
Research Details Devastating Toll of Colonization on Pacific Northwest Wildlife

When Europeans arrived to the Pacific Northwest, they spread smallpox that devastated the Indigenous people, plundered stocks of salmon and herring, hunted down deer and other game, and built sprawling cities and ports. New research tallies the profound impact on wildlife. Read more on E360 →

18 hours ago 2 votes
The Soviet Zond 3 Lunar Flyby: Revealing the Rest of the Far Side

Naturally, the early history of space exploration is filled with firsts. Just six decades ago at this time, the world watched as NASA’s Mariner 4 spacecraft […]

yesterday 5 votes
Clearcutting Can Lead to Devastating Floods, But It Doesn’t Have To

It has long been understood that clearcutting forests leads to more runoff, worsening flooding. But a new study finds that logging can reshape watersheds in surprising ways, leading to dramatically more flooding in some forests, while having little effect on others. Read more on E360 →

2 days ago 4 votes