astronomy

Hemant Mehta

Hemant Mehta is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hemant Mehta rather than just read about it. In short: Hemant Mehta (; born February 25, 1983) is an American author, blogger, YouTuber and atheist activist. He currently runs the Friendly Atheist channel, and used to run the channel, The Atheist Voice.

Key takeaways

Hemant Mehta belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Hemant Mehta to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Hemant Mehta from memory before moving on to harder problems.

Reference excerpt

Hemant Mehta (; born February 25, 1983) is an American author, blogger, YouTuber and atheist activist. He currently runs the Friendly Atheist channel, and used to run the channel, The Atheist Voice. Mehta is a regular speaker at atheist events, and he has been a board member of charitable organizations such as the Secular Student Alliance and the Foundation Beyond Belief. Mehta used to run the Friendly Atheist blog on Patheos, in which he and his associates published articles several times a day, and he also co-hosts a weekly podcast called the Friendly Atheist Podcast. The blog stopped its activities on Patheos from December 14, 2021. As of 2024, Mehta also publishes a newsletter. On April 1, 2020, Mehta won his first appearance on the television game show Jeopardy!.

Biography Mehta was born in Chicago, Illinois in 1983. He graduated from the University of Illinois at Chicago in 2004 with a double degree in math and biology and began teaching in 2007. He acquired a master's degree in math education from DePaul University in 2010 and a national board certification in teaching in 2012. He taught high school math at Neuqua Valley High School until 2014 when he announced on Facebook and his blog that he had submitted his resignation to the school, citing that "As much as I love being in the classroom, the opportunities online are just a lot greater right now, and I don't want to have any regrets down the road about not taking this chance while I have it." After his resignation, he stayed on as the head coach of the school's speech team. Mehta was raised in the Jain faith. He became an atheist as a teenager. Seeking to learn more about what motivated many Americans to be religious, he decided to attend and take notes at a number of churches across the United States. He based his choice of churches to attend on the results of an eBay auction in which he offered his bidders, "I am an atheist. You can bid on where I go to church or a temple or a mosque, etc." Mehta's experiences at the churches became the basis for his book, I Sold My Soul on eBay.

Activism Hemant Mehta established a secular student group, Students WithOut Religious Dogma (SWORD), at the University of Illinois at Chicago while earning dual degrees there. Later, still in college, he was board chair for the Secular Student Alliance. He interned at the Center for Inquiry where he became familiar with a lot of the national organizations and leaders in the activist world at that time. He was on the board of directors for the Foundation Beyond Belief, a non-profit charitable organization.

Mehta is a regular speaker at freethought and skeptical events around the U.S. He attempts to build bridges of understanding between believers and non-believers through his blog, The Friendly Atheist. Due in part to his positive message, he is also invited to speak at atheist events such as the one he presented at The Reason Rally or at the American Atheists Annual Convention in March 2012. A vocal advocate of building an atheist community, Mehta's activism includes fundraising for charitable causes. He helped establish and served on the board of the Foundation Beyond Belief, which raised more than $2,400,000 since it launched in 2010. He also established a church cleanup fund in response to reports of church vandalism in Bend, Oregon, in 2012. The vandals tagged the church with allusions to the Church of the Flying Spaghetti Monster, and Mehta's readers contributed nearly $3,000 in one day to help clean up the damage. Mehta wrote for the "On Faith" column in The Washington Post and has been featured in a New York Times debate on prayer. When he has been asked about his beliefs, he has stated: "Simply put, I have never seen any evidence of 'God's work' in action. I've seen what people think is God's work, but which actually has perfectly natural explanations. I believe that most people are good, even when nobody's looking. I believe our best path to discovering the truth lies in science, not religion."

In June 2013, Mehta wrote for the "Room for Debate" series in the New York Times, where he argued that "There's a very real downside to praying. It lulls believers into a false sense of accomplishment." In July 2013, he held an open discussion at the Oak Hills Church in San Antonio, Texas, where he explained his frustration at being confronted time and again with the same arguments for believing in God. He also commented that "Many Christians had negative stereotypes about atheists that prevented fruitful conversation." Mehta was a guest on CNN on August 20, 2013, to discuss the rise of atheism among the millennial generation. Also in 2013, he began publishing "The Atheist Voice" series of video discussions on YouTube, which had over 215 thousand subscribers in 2020. He started a second channel, Friendly Atheist, in 2019, and has since gained almost 100 thousand subscribers. Mehta is the co-host, with Jessica Bluemke, of a weekly podcast named the Friendly Atheist Podcast, which has produced nearly 600 episodes as of September 2025. In 2025, he was awarded the Humanist Media Award by the American Humanist Association.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Hemant Mehta

Start with the simplest possible case. Write down what Hemant Mehta claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hemant Mehta before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hemant Mehta ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hemant Mehta

In research: Hemant Mehta appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Hemant Mehta in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Hemant Mehta is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1983 births, 21st-century American non-fiction writers, 21st-century atheists, so understanding it makes those chapters shorter.
In everyday life: Look for Hemant Mehta outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Hemant Mehta in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Hemant Mehta means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Hemant Mehta out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hemant Mehta in simple terms?

Hemant Mehta (; born February 25, 1983) is an American author, blogger, YouTuber and atheist activist. He currently runs the Friendly Atheist channel, and used to run the channel, The Atheist Voice.

Why does Hemant Mehta matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hemant Mehta?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hemant Mehta.