MESAHub/mesa

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Modules for Experiments in Stellar Astrophysics

Stars: 249
Forks: 82
Open beginner issues: 0
Indexed issues: 114
Avg merge: 1d 3h
Merged PRs (30d): 3

Dominant language: Fortran
License: LGPL-3.0
Last GitHub push: Sep 4, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

114 open issues indexed

need test case for rotating core-collapse progenitor? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#651 · 11 comments · 1 reaction · Opened Jun 4, 2024
Interpretation of nuclear reaction rates Open

bug rates-net

MESAHub/mesa#648 · 1 comment · 4 reactions · 1 assignee · Opened May 23, 2024
no burning at lowT, lower the default jina rate floor. Open

rates-net

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#645 · 19 comments · Opened May 13, 2024
Add pgstar decorator to mark solver progress in Trho profiles + Kippenhahn diagrams Open

enhancement good first issue

Difficulty 5/5 Over a week Newbie friendliness 30/100

MESAHub/mesa#636 · 1 comment · 1 reaction · Opened Mar 25, 2024
CMS EOS Open

eos

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MESAHub/mesa#631 · 3 comments · Opened Mar 11, 2024
Degraded precision of evolutionary models when Ledoux switched on Open

MESAHub/mesa#624 · 4 comments · 2 assignees · Opened Feb 16, 2024
inconsistency between photo and mod file restarts Open

bug

MESAHub/mesa#610 · 9 comments · 1 reaction · 1 assignee · Opened Dec 17, 2023
Implement diffusivity limit for Harrington & Garaud prescription at high B Open

enhancement

MESAHub/mesa#604 · 2 comments · 2 assignees · Opened Nov 16, 2023
Generalize Viscosity used to calculatate Prandtl Number in Thermohaline Open

enhancement

MESAHub/mesa#602 · 1 assignee · Opened Nov 15, 2023
Generalize composition diffusivity used for thermohaline calculations Open

enhancement

MESAHub/mesa#598 · 3 comments · 1 assignee · Opened Nov 10, 2023
Convergence issues with mixing with a new eos Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#594 · 3 comments · Opened Oct 31, 2023
Improve Derivatives for Cubic Interpolation in Composition for Opacity Open

enhancement hackathon kap

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#593 · 5 comments · Opened Oct 19, 2023
unnecessary (?) installation failure when git lfs detects "short" files Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

MESAHub/mesa#587 · 5 comments · Opened Sep 20, 2023
Use allocatable arrays in predictive_mixing Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 30/100

MESAHub/mesa#581 · 2 comments · Opened Aug 22, 2023
Colors module with custom tables Open

summer_school test_suite

MESAHub/mesa#576 · 1 assignee · Opened Aug 9, 2023
EOS errors from ideal ions at high density / low temperature Open

eos

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#565 · 5 comments · Opened Jul 21, 2023
Inability to get through helium flash for 1.05 - 1.4 Msolar Open

documentation enhancement test_suite

MESAHub/mesa#563 · 1 comment · 1 assignee · Opened Jul 21, 2023
b% dt set late (or not at all?) in mesa/binary Open

MESAHub/mesa#556 · 3 reactions · 1 assignee · Opened Jun 28, 2023
Implicit mass accretion rate can be lareger than mass transfer rate Open

binary

MESAHub/mesa#546 · 2 assignees · Opened Jun 2, 2023
Switch donor function does not support 'Kolb' scheme Open

binary

MESAHub/mesa#545 · 2 comments · 2 assignees · Opened Jun 2, 2023
Inconsistency between 15140 and 23.05.1-rc2: emergence of pre TP-AGB oscillatory feature Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#543 · 16 comments · Opened Jun 1, 2023
Test results depend on `auto_diff` (thus `sympy`) implementation Open

autodiff

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MESAHub/mesa#530 · 8 comments · Opened May 3, 2023
profile_interval control has unexpected dependance on history_interval Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 38/100

MESAHub/mesa#528 · 8 comments · 2 reactions · Opened May 2, 2023
Missing documentation in binary_controls.defaults : sync_mode = "tdyn_div_tkh" Open

MESAHub/mesa#520 · 1 comment · 1 assignee · Opened Apr 2, 2023
Binary implicit mass transfer scheme convergence fails if rotation and bondi-hoyle are enabled Open

binary bug

MESAHub/mesa#507 · 2 comments · 1 assignee · Opened Mar 10, 2023
function of set_new_abundances control? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MESAHub/mesa#462 · 2 comments · 1 reaction · Opened Oct 18, 2022
create_merger_model unable to load second star Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MESAHub/mesa#449 · Opened Aug 23, 2022
FPE with rotation and D_ST_start Open

fpe

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MESAHub/mesa#448 · 1 comment · Opened Aug 18, 2022
pgstar Controls Open

enhancement good first issue

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#443 · Opened Aug 12, 2022
Unhelpful error message when setting logic variable incorrectly in inlist Open

documentation enhancement rainy day

MESAHub/mesa#437 · 3 comments · 1 reaction · 1 assignee · Opened Aug 11, 2022
Bumps when loading custom rates Open

bug rates-net

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MESAHub/mesa#421 · 11 comments · Opened Jun 9, 2022
Need a bit-for-bit safe error function in math Open

enhancement rainy day

Difficulty 5/5 Over a week Newbie friendliness 35/100

MESAHub/mesa#402 · 5 comments · Opened Apr 19, 2022
strange eccentricity enhancement (bug) Open

binary bug fpe

MESAHub/mesa#391 · 1 comment · 1 assignee · Opened Mar 21, 2022
Sound speed limiter on TDC? Open

discussion tdc

MESAHub/mesa#373 · 8 comments · 3 assignees · Opened Feb 17, 2022
brunt in rotation Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MESAHub/mesa#372 · 8 comments · 1 reaction · Opened Feb 11, 2022
evaluation based on phase_of_evolution Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MESAHub/mesa#340 · 31 comments · Opened Nov 4, 2021
Should `math`'s unit tests generate the top-level `testhub.yml`? Open

rainy day

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MESAHub/mesa#334 · 5 comments · Opened Oct 7, 2021
`num` test failures beyond bit-for-bit differences with intrinsic math Open

good first issue rainy day

Difficulty 4/5 3-5 days Newbie friendliness 28/100

MESAHub/mesa#331 · 13 comments · Opened Oct 5, 2021
State is unclear in the `star` pointer. Open

discussion

Difficulty 5/5 Over a week Newbie friendliness 20/100

MESAHub/mesa#328 · 41 comments · Opened Sep 24, 2021
Document which test cases fall into categories of "example" and "feature test" Open

documentation test_suite

Difficulty 5/5 Over a week Newbie friendliness 30/100

MESAHub/mesa#327 · Opened Sep 23, 2021
Make use of residual_weight consistent. Open

documentation enhancement

Difficulty 4/5 3-5 days Newbie friendliness 45/100

MESAHub/mesa#315 · Opened Aug 30, 2021
Can’t generate starting model for gyre_in_mesa_wd Open

test_suite

MESAHub/mesa#313 · 6 comments · 1 assignee · Opened Aug 26, 2021
TDC fails on ns_he. Open

test_suite

Difficulty 5/5 Over a week Newbie friendliness 20/100

MESAHub/mesa#312 · 1 comment · Opened Aug 26, 2021
Open todo in job/run_star_support.f90 Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#310 · Opened Aug 20, 2021
Open todo in hydro_temperature Open

MESAHub/mesa#309 · 1 assignee · Opened Aug 20, 2021
Move the definition of `auto_diff_star_num_vars` from `star_data/public/star_data_def.inc` to `auto_diff`. Open

MESAHub/mesa#300 · 1 assignee · Opened Aug 1, 2021
RSP could do with more hooks Open

enhancement rsp

Difficulty 5/5 Over a week Newbie friendliness 25/100

MESAHub/mesa#297 · Opened Jul 19, 2021
Standards for EOS return values Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

MESAHub/mesa#285 · 10 comments · Opened Jun 21, 2021
`star_utils:get_phot_info` should raise non-zero `ierr` if L < 0 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MESAHub/mesa#280 · 8 comments · 1 reaction · Opened Jun 18, 2021
Angular momentum conservation check Open

MESAHub/mesa#259 · 1 assignee · Opened May 21, 2021

MESAHub/mesa

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