Astronomy and Astrophysics
General Links
NASA/ADS: Online database astronomy and physics papers (freely available).
arXiv: Open-access repository of electronic preprints and postprints approved for posting after moderation, but not peer review (freely available).
NASA/IPAC Extragalactic Database (NED): Online astronomical database that collates and cross-correlates astronomical information on extragalactic objects (freely available).
NED Search: Same as NED above, but here you can serach references, reviews and thesis on a particular topic in astronomy and astrophysics. I find this very useful sometimes to go through some notes on a particular topic (freely available).
AAS Job Portal: To find and post astronomy related jobs (faculty, postdoc, PhD and internships).
Astronomy Conferences: To find details about astronomy conferences.
List of Astronomy Journals: Astronomy journals comparison, based on their impact.
Astronomical Data Products
SDSS V: Official SDSS-V website.
SDSS Data Release 16: Publicly available SDSS DR16 data and catalogues.
DESI Early Data Release: Publicly available DESI Early Data Release and catalogues. It includes spectra for 1.8 million unique targets from Survey Validation observations taken from December 2020 through June 2021.
DESI Data Release 1: Publicly available DESI Data Release 1 and catalogues. It includes spectra for more than 18 million unique targets from Main Survey observations taken between May 2021 and June 2022.
Legacy Survey: Publicly available legacy imaging survey data.
Hubble Space Telescope: Official NASA HST page.
HST Archival Data: Data products from HST.
ESA/Hubble Wallpapers: High quality astronomy images taken by Hubble and ESA telscopes.
Keck Archive: Archival data from Keck Observatory.
ESO Science Archive Facility: Data from ESO telescopes at La Silla Paranal Observatory.
VLT MUSE Data: Archival data from VLT MUSE.
NASA Chandra X-ray: Official NASA website.
Chandra Archive: Chandra X-ray archival data.
VLA Archive: NRAO’s Very Large Array archival data.
Computer Simulations
Illustris Project: Large cosmological simulation of galaxy formation.
Illustris TNG: Ongoing series of large, cosmological MHD simulations of galaxy formation.
Auriga Simulations: Large suite of high-resolution MHD simulations of Milky Way-sized galaxies.
GADGET-4: Parallel cosmological N-body and SPH code meant for simulations of cosmic structure formation.
AREPO: Finite-volume MHD code for astrophysics (moving mesh hydrodynamics).
FIRE Simulations: Simulating ISM and CGM of galaxies.
EAGLE Project: Simulation aimed at understanding how galaxies form and evolve.
L-Galaxies Project: Semi-analytic models of galaxy formation built upon dark matter simulation only such as Millenium.
MultiModelUniverse: The Multimodal Universe dataset is a large scale collection of multimodal astronomical data, including images, spectra, and light curves, which aims to enable research into foundation models for astrophysics and beyond.
Programming Links
Stack Overflow: Question and answer website for professional and enthusiast programmers.
Python: Python is an interpreted high-level general-purpose programming language.
Python Document: The official documentation of Python language.
PEP 8: Official style Guide for Python Code.
NumPy: Library for the Python programming language, adding support for large, multi-dimensional arrays and matrices.
SciPy: free and open-source Python library used for scientific and technical computing.
Astropy: Collection of software packages written in the Python programming language and designed for use in astronomy.
Jupyter notebook: Open-source web application that allows you to create and share documents that contain live code, equations, visualizations and narrative text.
Matplotlib: Comprehensive library for creating static, animated, and interactive visualizations in Python.
HDF5 library: A great data software to manage large array datasets. Very easily importable to Python.
Wolfram online: Compute answers using Wolfram’s online solvers.
Overleaf: Collaborative cloud-based LaTeX editor used for writing, editing and publishing scientific documents.
WebPlotDigitizer: Online tool to extract the underlying numerical data from an image (I find it very useful).
Mendeley: Online reference manager to manage and share research papers and also to generate bibiliographies (semi-free).
Zotero: Free and open-source reference management software.
General Links
Wikipedia: Free online encyclopedia.
Springer Free Books: Free books from Springer, just have a look.
Encyclopaedia Britannica: Free general knowledge English-language encyclopaedia (similar to wikipedia).
Grammarly: Online english grammar check (basic version is free).