500,000 satellites from SpaceX's FCC filing, two published brightness models and the real stars, for any latitude, date and time. Computed in your browser.

The Multiscale Physics of Clouds Across Planetary Atmospheres collaboration, funded by the Simons Foundation, is seeking 8 postdoctoral researchers to develop new approaches to understanding clouds ac...

We present a reanalysis of JWST NIRCam F322W2/F444W transit observations of the hot Jupiter HD 209458 b to extract morning and evening transmission spectra. To determine whether asymmetries in the tra...

We detect a candidate fifth planet in the HR 8799 system, directly imaged with the JWST/NIRISS Aperture Masking Interferometer (AMI). The detected source lies just above a $3σ$ contrast curve at a con...

The Y dwarf WISE 1935 exhibits a thermal inversion in its radiative atmosphere, producing methane emission features in its JWST spectrum, but the physical mechanism responsible for this inversion rema...

Brown dwarf variability directly probes atmospheric dynamics beyond the Solar System, and recent JWST time-resolved spectroscopy has opened a new window into these processes. Principal component analy...

The Journal of Open Source Software - known to its friends as JOSS - is is a developer friendly, diamond open access journal for research software packages which has been running since 2016 and is enormously successful, publishing Open Source software across many fields of science. Its UR, joss.theoj.org, is a giveaway that it is a stablemate of astro.theoj.org…

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Astronomers constrain the properties of a rocky exoplanet’s hot crust with JWST observations.

On AI agents, grunt work, and the part of science that isn't replaceable.

Residents report terror of smoke-filled city, from potentially toxic rain, air and water to food scarcity and difficulty of escape

Astronomers for Planet Earth (A4E) is an international grassroots movement of astronomy students, educators, amateurs and scientists, working to address the climate crisis from an astronomical perspec...

Mapping the Cloud-driven Atmospheric Dynamics and Chemistry of an Isolated Exoplanet Analog with Harmonic Signatures, Plummer, Michael K., Cocchini, Francis P., Kearns, Peter A., McCarthy, Allison M., Artigau, Étienne, Cowan, Nicolas B., Akhmetshyn, Roman, Vos, Johanna M., Nasedkin, Evert, Visscher, Channon, Benneke, Björn, Doyon, René, Metchev, Stanimir A., Rowe, Jason F., Suárez, Genaro

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At time of writing, large language models (LLMs) are beginning to obtain the ability to design, execute, write up, and referee scientific projects on the data-science side of astrophysics. What implic...

The Other Worlds Laboratory (OWL) at the University of California, Santa Cruz (UCSC) will soon be accepting applications for the eighth annual Exoplanet Summer Program (ESP), from August 10 –…

In the frozen streets of Minneapolis, something profound is happening.

The Academia Sinica Institute of Astronomy and Astrophysics (ASIAA) invites applications to two postdoctoral research positions in cosmology and exoplanet science, working with Dr. Tomomi Sunayama and...

The prime minister of Denmark called on Trump to “stop the threats” of the U.S. annexing Greenland after renewed comments garnered international attention.

ESO is the European Organisation for Astronomical Research in the Southern Hemisphere. It operates the La Silla Paranal Observatory in Chile and has its headquarters in Garching, near Munich, Germany.

This archive contains the reduced NIRSpec and MIRI spectra of the variable brown dwarf, SIMP J013656.5+093347.3 as observed in JWST GO 3548, and published in Nasedkin et al. 2025. Also included are th...

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