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Optics

Tools for Possibilities: issue no. 197

Foggy mirror

PHOTO: STEPHEN JAQUIERY Nature’s pre-sunrise paint brush coloured the underside of clouds which in turn reflected off fog hanging over Otago Harbour in this recent view from...

Увеличение предельной дальности атмосферных оптических линий программным методом

Атмосферные оптические линии связи (АОЛС) используют передачу через атмосферу оптического излучения ближнего инфракрасного диапазона. В английском языке соответствующий термин free...

Atmos Is a Weather App By Photographers, for Photographers

As photographers know, light is extremely important. And for outdoor photographers, nothing affects the quality of light quite like the weather. Photographer Matthew Raifman wanted...

Asymmetric weather pattern reveals exoplanet’s true atmosphere

New observations by the JWST provide a much clearer understanding of clouds on a distant world The post Asymmetric weather pattern reveals exoplanet’s true atmosphere appeared firs...

Why Is the Sky Blue?

Why are sunsets red, for that matter? And why is space black? The answer is all about how light interacts with Earth's atmosphere.

Cruise Travelers Witness Rare Emerald Sunset Magic

An exceptional travel moment recently unfolded at sea as fortunate cruise passengers witnessed the legendary green flash sunset phenomenon. This magical optical event occurs just a...

Adventures with astrophotography

Stella: look skywards… Clouds permitting! One of the UK suppliers of telescopes and other astro paraphernalia has a joke sticker they sometimes put on their shipping boxes: “Ma...

Nautilus array to track missing exoplanet atmospheres

Exoplanet atmospheres have become prime targets for astrobiologists in the search for life beyond Earth. This is because exoplanet surfaces can't be directly imaged yet, so astrono...

These rare glowing 'space clouds' are summer's best-kept skywatching secret

Now is the time to look for noctilucent clouds — shimmering ice clouds that glow near the edge of space.

Halo

This afternoon, the Sun: Ice crystals, apparently.

Skies like these

skies like these can be ...

VIDEO: Rare noctilucent clouds spotted over downtown Portland

PORTLAND, Ore. (KOIN) -- Rare noctilucent clouds were spotted over downtown Portland late Tuesday night. The National Weather Service defines noctilucent clouds as "thin silvery-bl...

Friday Photo: Circles in the Sky

Friday Photo: Circles in the Sky Air Facts Journal Despite this being January, beautiful weather still was covering our area. As the skies provided some action with cloud cover, I...

Night Skies 1st August 2025 and beyond

Don’t know about the Portal but we are very very lucky here in the Cévennes where most public lights are off by 22:00 to protect the biosphere and to preserve the drink driving cul...

JWST maps the weather on a hot gas giant 700 light-years away

The differences seen here could be throwing off how we study planetary atmospheres.

Meteor Lights Up the Night Sky Above an Erupting Volcano

Nautilus Array to Track Missing Exoplanet Atmospheres

Exoplanet atmospheres have become prima targets for astrobiologists in the search for life beyond Earth. This is because exoplanet surfaces can’t be directly imaged yet, so astrono...

Space storms light up Japan's sky with red auroras climbing far higher than expected

On a special night, if you are lucky, you might catch a faint red glow quietly lighting up Japan's sky, stretching low along the horizon and easy to miss if you are not looking car...

One of the sky's rarest phenomena is back: How to see rare night-shining clouds this summer

Night shining noctilucent clouds could brighten the sky before dawn and after sunset from tonight!

Scientists Discover a Hidden Chemical Pathway That Makes City Air Hazy

Nitric oxide may play a larger role in city air pollution than scientists previously thought. City air can look clear one moment and turn hazy the next, but the chemistry behind th...

JWST sees partly cloudy skies on a distant, giant exoplanet

An out-of-this-world weather report from NASA’s James Webb Space Telescope reveals how clouds move across a giant planet hundreds of light-years from Earth

Astrophotographer captures a cosmic lagoon glowing 5,200 light-years from Earth (photo)

The Lagoon Nebula is best spotted in the months surrounding August in the Northern Hemisphere.

Astronomers de-fog exoplanet atmospheres with new cloud-detecting method

Sand clouds form every morning but clear up by nightfall on WASP-94A b, a well-studied gas giant in a constellation located nearly 700 light years away from Earth. Using data from...