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Hubble’s Dark Horse: New measurements of the Hubble constant from LIGO’s dark sirens
In the race to resolve the tension between cosmological and local measurements of the Hubble constant, another method enters the contest… using gravitational wave signals without an electromagnetic counterpart!!
Too Massive, Too Early… and Still Not Massive Enough?
What if JWST’s early massive galaxies are not overestimated, but underestimated? A bottom-heavy IMF could hide tons of mass in faint stars.
Admiring the Atmospheric Egg Shell of Sub-Neptune TOI-270d
Whether you’re a six-year-old scouring the backyard on Easter morning, or an exoplanet astronomer with observing time on the James Webb Space Telescope, nothing beats the feeling of finding what you’re looking for. So, you can imagine the authors of today’s paper were pretty excited when they received their transmission spectroscopy data of the sub-Neptune known as TOI-270d.
The April Fools Paper Review Process – 2026
There is a tradition in Astronomy to post silly science papers to the arXiv on Aprils Fools day. We’ve collected them all for 2026 and provided some “peer review”.
![[Beyond] Why Go Back to the Moon? Artemis II, Explained](https://astrobites.org/wp-content/uploads/2026/04/Artemis_II_patch-320x260.png)
[Beyond] Why Go Back to the Moon? Artemis II, Explained
Artemis II successfully launched on April 1st, 2026! But, why are we going back over 53 years later?
The Case of the Extremely Energetic Gamma Rays: an LS I +61 303 Mystery
In today’s bite, the LHAASO collaboration tackle a gamma ray mystery in the LS I +61 303 system, investigating just who (or what) might be responsible.
Beyond astro-ph
Astronomy beyond the research
What I learned in my science policy course
In today’s bite, I share what I learned about science funding in the United States’ history and future in a science policy course I took last spring.
The Atmosphere’s Health is Astronomy’s Future
Learn how rocket launches and the demand for satellites threaten astronomy and the ozone layer.
A Commentary on Academic Astronomy: From the perspective of The Little Prince
In today’s bite, the author dives into this beloved classic to search for lessons it has for everyone in academic astronomy
Navigating careers in astronomy
Career advice
MIT PhysGAAP: Here to help with your physics graduate school application
Apply to MIT’s PhysGAAP Program by Nov. 15th, which pairs PhD applicants with grad student mentors, and provides resources for navigating the grad school application process.
Grad Student Unions 101
Unions are becoming a more prevalent feature of grad schools to consider when applying to grad school. This bite reviews some of the details to consider when choosing a school with (or without) a union.
Advisee to Advising (your first research student)
Advising research students is one of the most rewarding aspects of doing research. How can you advise a research student during your PhD?