Best Free Online Courses

Here are the list of top and best free online courses sites to study anything from Arts to Sciences, Engineering and Technology.

Top Best Online Courses


Coursera partners with universities and organizations around the world. This brings online courses on a wide variety of topics and perspectives to one searchable database. This gives the site an extremely wide range of in-depth courses. Coursera is extremely useful if you’re looking to study many different topics or want courses from different schools and groups.


Khan Academy

Expert-created content and resources for every subject and level. Khan Academy allows you to learn almost anything for free. You can learn anything – for free: Over 10,000 videos and explanations at your fingertips in math, science, economics, history, and much more.


Open Culture

Openculture provides over 1,300 free online courses from the world’s leading universities — Stanford, Yale, MIT, Harvard, Berkeley, Oxford and more. You can download these audio & video courses (often from iTunes, YouTube, or university websites) straight to your computer or mp3 player. Over 45,000 hours of free audio & video lectures for free.


Academic Earth

Academic Earth is an organization founded with the goal of giving everyone on earth access to a world-class education. It offers a comprehensive collection of online courses from universities such as Harvard, Yale, Stanford, and MIT.



edX is a massive open online course provider. It hosts online university-level courses in a wide range of disciplines to a worldwide student body, including some courses at no charge.


MIT Open Courseware

MIT OpenCourseWare is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity. Many courses also have complete video lectures, free online textbooks, and faculty teaching insights. While some OCW content is custom-created for online use, most of it comes straight from the MIT classroom. There’s no signup, no enrollment, and no start or end dates. The entire OCW collection is always there for you.


NPTEL Online Courses

NPTEL (National Programme on Technology Enhanced Learning) is a joint initiative of the Indian Institute of Technology and Indian Institute of Sciences. Through this initiative, they provide online courses and certification in various topics. Online Courses are free for all.



The TED-Ed project — TED’s education initiative — makes short video lessons worth sharing, aimed at educators and students. Within TED-Ed’s growing library of lessons, you will find carefully curated educational videos, many of which are collaborations between educators and animators nominated through the TED-Ed.



Alison is an e-learning provider. Its stated objective is to enable people to gain basic education and workplace skills. Contrary to other MOOC providers with close links to American third level institutions such as MIT and Stanford University, the majority of Alison’s learners are located in the developing world.



LessonPaths’ online learning platform allows anyone with a passion for what they do to curate websites, videos, blogs, and more into Learning Playlists. So instead of searching alone, people all around the world can work together to show off what they know and learn from each other.

Send your Name aboard the NASA Parker Solar Probe

NASA’s Parker Solar Probe will take off for a closer look at the sun.

The opportunity for Humans to send their name in a memory card aboard near to the sun.

Parker Solar Probe will swoop to within 4 million miles of the sun’s surface, facing heat and radiation like no spacecraft before it. This mission will provide insight on a critical link in the Sun-Earth connection.

NASA plans to launch the probe in space next summer for a seven-year trip to the luminous body. NASA is inviting people around the world to submit their names online to be placed on a microchip aboard NASA’s historic Parker Solar Probe mission.

Credits: NASA

On the page dedicated to the contest, the pitch of NASA is tantalizing – “Come with us as we plunge through the Sun’s atmosphere, closer to the surface than any spacecraft before it, facing brutal heat and radiation conditions—and ultimately providing humanity with the first-ever close-up view of a star.

To register, sign up at before April 27th.

In order to unlock the mysteries of the sun’s atmosphere, Parker Solar Probe will use Venus’ gravity during seven flybys over nearly seven years to gradually bring its orbit closer to the sun. The spacecraft will fly through the sun’s atmosphere as close as 3.9 million miles to our star’s surface, well within the orbit of Mercury and more than seven times closer than any spacecraft has come before. (Earth’s average distance to the sun is 93 million miles.)

Flying into the outermost part of the sun’s atmosphere, known as the corona, for the first time, Parker Solar Probe will employ a combination of in situ measurements and imaging to revolutionize our understanding of the corona and expand our knowledge of the origin and evolution of the solar wind. It will also make critical contributions to our ability to forecast changes in Earth’s space environment that affect life and technology on Earth.

Parker Solar Probe will perform its scientific investigations in a hazardous region of intense heat and solar radiation. The spacecraft will fly close enough to the sun to watch the solar wind speed up from subsonic to supersonic, and it will fly though the birthplace of the highest-energy solar particles.

To perform these unprecedented investigations, the spacecraft and instruments will be protected from the sun’s heat by a 4.5-inch-thick (11.43 cm) carbon-composite shield, which will need to withstand temperatures outside the spacecraft that reach nearly 2,500 F (1,377 C).

At closest approach, Parker Solar Probe hurtles around the sun at approximately 430,000 mph (700,000 kph). That’s fast enough to get from Philadelphia to Washington, D.C., in one second.

At closest approach to the sun, the front of Parker Solar Probe’s solar shield faces temperatures approaching 2,500 F (1,377 C). The spacecraft’s payload will be near room temperature.

On the final three orbits, Parker Solar Probe flies to within 3.7 million miles of the sun’s surface – more than seven times closer than the current record-holder for a close solar pass, the Helios 2 spacecraft, which came within 27 million miles in 1976 and more than 10 times closer than Mercury, which is about 42 million miles from the sun.