I find the the browser-friendly tools like LandsatLook[2] or Earth Explorer[3] to be more difficult to use, but if you're interested USGS has posted some great tutorials for them on YouTube[4]. There are also some interesting ideas about how to use the data itself beyond just creating pretty pictures.
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[1]: https://github.com/developmentseed/landsat-util
[2]: https://landsatlook.usgs.gov/
L8: https://aws.amazon.com/es/public-datasets/landsat/
S2: http://sentinel-pds.s3-website.eu-central-1.amazonaws.com/
https://ngdc.noaa.gov/eog/download.html
The Visible Infrared Imaging Radiometer Suite Day-Night Band (VIIRS DNB) images the entire Earth nightly at a resolution of about 750 meters. Suomi NPP orbits the Earth 14 times per day on a 16-day repeat cycle. The average time at which images are taken is near 01:30 in local solar time, but can vary by over an hour depending on latitude and the particular cycle.
To get into top journals it is really about simple method + novel idea + good story.
The same holds for top Finance journals like 'Journal of Finance', etc.
They are more tech focused journals and have less impact.
