In this section I am putting some useful links that are mainly related to astronomy. Most of them are taken from Dr. Poonam Chandra's personal webpage! Useful links that are not related to astronomy are kept in the section "Non-physics Blogs".

General Astronomy Links:

1.  Astrophysics Data System (ADS) : https://ui.adsabs.harvard.edu/

2.  SIMBAD Astronomical Database: http://simbad.u-strasbg.fr/simbad/

3.  arxiv Astrophysics (astro-ph): https://arxiv.org/list/astro-ph/new

4.  SkyView Query Form: https://skyview.gsfc.nasa.gov/current/cgi/query.pl

5.  NASA/IPAC Extragalactic Database (NED):  http://ned.ipac.caltech.edu/

6.  HEASARC archive: https://heasarc.gsfc.nasa.gov/

7.   NASA/IPAC Infrared Science Archive (IRSA): https://irsa.ipac.caltech.edu/frontpage/

8.  Very Large Array Sky Survey (VLASS): https://science.nrao.edu/vlass

9.  TIFR GMRT Sky Survey (TGSS):  http://tgssadr.strw.leidenuniv.nl/doku.php

10.  Sloan Digital Sky Survey (SDSS): https://www.sdss.org/

11.  NVSS Postage Stamp Server: https://www.cv.nrao.edu/nvss/postage.shtml

12.  FRB Catalogue: https://www.frbcat.org/

13.  ATNF Pulsar Catalogue: https://www.atnf.csiro.au/research/pulsar/psrcat/

14.  IAU Transient Name Server: https://www.wis-tns.org/

15.  List of VLA Calibrators: https://science.nrao.edu/facilities/vla/docs/manuals/observing/callist

GMRT/NCRA Links:

1.  NCRA Archive and Proposal System (NAPS) : https://naps.ncra.tifr.res.in/naps/login

2.  GMRT Online Archive (GOA): https://naps.ncra.tifr.res.in/goa/data/search

3.  GMRT Observing Help (astrosupport): http://gmrt.ncra.tifr.res.in/~astrosupp/

4.  GMRT Observing Schedule: http://www.ncra.tifr.res.in:8081/~secr-ops/sch/webfiles/gtac.php

5.  GTAC Page: http://www.ncra.tifr.res.in/ncra/gmrt/gtac

Other Telescope Links:

1.  VLA Proposal: https://science.nrao.edu/facilities/vla/proposing

2.  VLA archive: https://archive.nrao.edu/archive/advquery.jsp

3.  SWIFT Observatory: https://www.swift.psu.edu/

4.  Chandra X-ray Observatory: https://cxc.harvard.edu/

5.  XMM-Newton: https://www.cosmos.esa.int/web/xmm-newton

6.  Murchison Widefield Array (MWA): https://www.mwatelescope.org/

7.  LOFAR: https://www.astron.nl/telescopes/lofar

8.  MeerKAT:  https://www.sarao.ac.za/gallery/meerkat/

9.  SKA: https://www.skatelescope.org/

10.  ATNF: https://www.atnf.csiro.au/projects/askap/index.html

11.  ASTROSAT: https://www.isro.gov.in/astrosat-0

12.  Himalayan Chandra Telescope: https://www.iiap.res.in/iao/cycle.html

13.  Devasthal 3.6m Optical Telescope: https://www.aries.res.in/facilities/astronomical-telescopes/36m-telescope

Data Analysis Links:

1.  CASA Guides: https://casaguides.nrao.edu/index.php?title=Main_Page

2.  AIPS: http://www.aips.nrao.edu/index.shtml

3.  CASA Tutorials: https://casaguides.nrao.edu/index.php/Karl_G._Jansky_VLA_Tutorials

4. NRAO Video Tutorial: panopto.com.....

5.  SPAM: http://www.intema.nl/doku.php?id=huibintemaspam

6.  VLA Pipeline: https://science.nrao.edu/facilities/vla/data-processing/pipeline

7.  CIAO Science Thread: https://cxc.harvard.edu/ciao/threads/index.html

8.  XMM SAS Thread: https://www.cosmos.esa.int/web/xmm-newton/sas-threads

9.  NuSTAR Analysis Thread: https://heasarc.gsfc.nasa.gov/docs/nustar/analysis/

10.  XSPEC Manual: https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/manual.html

Stars/ SNe/ GRBs:

1.  AAVSO: https://www.aavso.org/ 

2.  Galactic O-star Catalogue: https://gosc.cab.inta-csic.es/

3.  Galactic Wolf-Rayet Star Catalogue: http://www.pacrowther.staff.shef.ac.uk/WRcat/

4.  Stellar System Group: https://ssg.iaa.csic.es/

5.  BinaMIcS: https://www.cfht.hawaii.edu/Science/BinaMIcS/

6.  ATEL: https://www.astronomerstelegram.org/

7.  Open SNe Catalogue: https://sne.space/

8.  Open TDE Catalogue: https://tde.space/

9.  IAU Recent SNe: http://www.cbat.eps.harvard.edu/lists/RecentSupernovae.html

10.  Rochester SNe Links: https://www.rochesterastronomy.org/snimages/snlinks.html

11.  CRTS Survey: http://crts.caltech.edu/

12.  High Energy SNRs Catalogue: http://snrcat.physics.umanitoba.ca/

13.  CRTS Optical Transient: http://nesssi.cacr.caltech.edu/catalina/CRTSII_Allns.html

14.  GCN Circulars: https://gcn.gsfc.nasa.gov/gcn3_archive.html

15.  AAVSO GRB Links: https://www.aavso.org/grb-links-resources-related-gamma-ray-bursts

16.  Astrosat GRB Monitor: http://astrosat.iucaa.in/czti/?q=grb

17.  GRB Catalogue: https://heasarc.gsfc.nasa.gov/grbcat/grbcat.html

18.  Swift GRB Table: https://swift.gsfc.nasa.gov/archive/grb_table.html/

19.  Swift-XRT GRB Catalogue: https://www.swift.ac.uk/xrt_products/

20.  J. Greiner GRB: https://www.mpe.mpg.de/~jcg/grbgen.html

21. Other GRB Links: https://www.mpe.mpg.de/~jcg/grblink.html

Astro Blogs:

1.  Phil Plait's Bad Astronomy: http://www.badastronomy.com/index.html

2.  One Astronomer's Noise: http://noisyastronomer.com/

3.  Women in Astronomy: http://womeninastronomy.blogspot.com/

4.  Female Science Professor: http://science-professor.blogspot.com/

5.  Astronomy Blog: http://www.strudel.org.uk/blog/astro/index.shtml

6.  Arxiver: http://arxiver.moonhats.com/

7.  NASA Watch: http://www.nasawatch.com/

Miscellaneous Astronomy Links:

1.  TOPCAT: http://www.star.bris.ac.uk/~mbt/topcat/ 

2.  FIRST Catalogue Search: http://sundog.stsci.edu/cgi-bin/searchfirst

3.  VLA Archive Image Service:  http://archive.nrao.edu/nvas/

4.  VizieR: http://vizier.u-strasbg.fr/viz-bin/VizieR

5.  Effilsberg MPIfR Survey: http://www3.mpifr-bonn.mpg.de/survey.html

6.  MAGPIS Survey: https://third.ucllnl.org/gps/

7.  CATS Database: http://www.sao.ru/cats/

8.  Astrophysics Source Code Library (ASCL) : http://ascl.net/

9.  List of TeV sources: http://tevcat.uchicago.edu/

10.  High Energy Astrophysics Meetings: https://heasarc.gsfc.nasa.gov/docs/heasarc/meetings.html

11.  GRB and Swift related conferences: https://www.swift.ac.uk/results/conferences.php

12.  Conferences and Meetings on Astronomy... https://conference-service.com/conferences/gravitation-and-cosmology.html

13.  SAO Encyclopedia of Astronomy (COSMOS): https://astronomy.swin.edu.au/cosmos/

14.  Catalogue of Galactic Supernova Remnants: http://www.mrao.cam.ac.uk/surveys/snrs/

15.  Astrophysical Calculator: http://www.astro.wisc.edu/~dolan/constants/calc.html

16.  HJD Calculator: https://britastro.org/computing/applets_dt.html

17.  Astronomy Thesis Collection: https://zenodo.org/communities/astrothesis?page=1&size=20

18.  VLA Calibrator Search: http://www.vla.nrao.edu/astro/calib/search/

19.  AstroPix: https://astropix.ipac.caltech.edu/

20.  Astronomical Society of India (ASI): https://www.astron-soc.in/

21. Time Conversion Tool NASA: https://ssd.jpl.nasa.gov/tc.cgi

22. Angular Separation Calculator: https://cads.iiap.res.in/tools/angularSeparation

23.  NASA Horizon Ephemeris Tool: https://ssd.jpl.nasa.gov/horizons.cgi