(CNN) Highly respected astrophysicist Neil deGrasse Tyson has become well known for his many appearances on television, including hosting the 2014 series "Cosmos: A Spacetime Odyssey."

He also has more than 5 million followers on Twitter, where he gives his thoughts on current events from a scientific point of view (along with random musings such as "I occasionally wonder whether the entire Universe is nothing more than a snow-globe on the living room mantle of an Alien.")

He's no Kanye West or Donald Trump, to be sure, but he has gotten his share of backlash from some of the things he's tweeted.

1. He got sex in the animal kingdom wrong

The most recent tweet to cause an uproar had Tyson commenting on biology.

"If there were ever a species for whom sex hurt, it surely went extinct long ago," he wrote.

If there were ever a species for whom sex hurt, it surely went extinct long ago. — Neil deGrasse Tyson (@neiltyson) March 11, 2016

The response was immediate, with science writer Carl Zimmer tweeting, "I think you need to read about bedbugs, sir."

@neiltyson I think you need to read about bedbugs, sir. — carlzimmer (@carlzimmer) March 12, 2016

Kyle Hill, the science editor for Nerdist, tweeted a series of examples, such as "snails love getting stabbed in the head with sex spikes. And spiders go crazy for snapping their penises off."

@neiltyson And snails love getting stabbed in the head with sex spikes. And spiders go crazy for snapping their penises off. — Kyle Hill (@Sci_Phile) March 11, 2016

Perhaps Tyson should stick to astrophysics.

2 He hated the science in the new 'Star Wars'

Tyson has often given his thoughts on science fiction movies and how realistic they are, but it's highly unlikely that many people saw "Star Wars: The Force Awakens" looking for scientific accuracy.

Even so, he fact checked the smash hit movie anyway.

Among his observations: "BB-8, a smooth rolling metal spherical ball, would have skidded uncontrollably on sand," and "the energy in a Star is enough to destroy ten-thousand planets, not just a few here & there."

In @StarWars #TheForceAwakens the TIE fighters made exactly the same sound in the vacuum of space as in planetary atmospheres — Neil deGrasse Tyson (@neiltyson) December 21, 2015

In @StarWars #TheForceAwakens, if you were to suck all of a star's energy into your planet, your planet would vaporize. — Neil deGrasse Tyson (@neiltyson) December 21, 2015

Needless to say, "Star Wars" fans were none too pleased with him.

@neiltyson @starwars Oh really? And what happens when you suck all the fun from a science fiction movie? :P — Uri Goldstein (@urig) December 21, 2015

I love you @neiltyson, but nobody cares the science in #StarWarsTheForceAwakens is shaky. And that's okay. — Jack Norris (@JackNorr) December 22, 2015

It's somewhat to be expected since Tyson prefers "Star Trek."

Read more on this here.

3. He debunked Leap Day, for some reason

So there we were enjoying our extra day a few weeks ago, when Tyson had to go and tweet about how Leap Day is a misnomer.

"We're not leaping anywhere," he said. "The calendar is simply, and abruptly, catching up with Earth's orbit."

The Leap Day is misnamed. We're not leaping anywhere. The calendar is simply, and abruptly, catching up with Earth's orbit — Neil deGrasse Tyson (@neiltyson) February 29, 2016

Matt Breunig was among those heaping sarcasm or scorn on Tyson's thoughts: "if only there was a name for a sudden and abrupt lurch forward."

@neiltyson if only there was a name for a sudden and abrupt lurch forward — Matt Bruenig (@MattBruenig) February 29, 2016

@neiltyson no one likes it when you do this — jonnifer lopez (@senderblock23) March 1, 2016

Though he also offered up an alternative.

"We could instead wait 28 years and insert a 'Leap Week.' Or 112 years and insert a 'Leap Month.' "

Don't like Leap Days? We could instead wait 28 years and insert a "Leap Week". Or 112 years and insert a "Leap Month". — Neil deGrasse Tyson (@neiltyson) February 29, 2016

4. Trolling on Christmas

One way you're guaranteed to get some people upset is to tweet sarcastically about the biblical meaning of Christmas on Christmas Day itself. And that's exactly what Tyson did in 2014.

"On this day long ago, a child was born who, by age 30, would transform the world," Tyson wrote, followed by the punchline: "Happy Birthday Isaac Newton b. Dec 25, 1642."

On this day long ago, a child was born who, by age 30, would transform the world. Happy Birthday Isaac Newton b. Dec 25, 1642 — Neil deGrasse Tyson (@neiltyson) December 25, 2014

He went on to tweet, "Merry Christmas to all. A Pagan holiday (BC) becomes a Religious holiday (AD). Which then becomes a Shopping holiday (USA)."

5. He really does not like Pluto as a planet

Probably the biggest thing Tyson is asked about is his view on the former planet Pluto.

Tyson is staunchly in favor of the decision to demote the planet to "dwarf planet" status in 2005.

Every once in a while, he'll tweet about it: "You're still a dwarf planet. Get over it," and the like.

Dear Pluto,

Lookin' good. But you're still a Dwarf Planet — get over it.

Love, Neil deGrasse Tyson pic.twitter.com/qBBD9feG6e — Neil deGrasse Tyson (@neiltyson) July 15, 2015

And he'll continue to get responses like, "Dad stop bullying Pluto, his self esteem is already low enough," and "Pluto has a heart. Tyson doesn't seem to though."

@neiltyson Pluto has a heart. Tyson doesn't seem to though.... :( — EuropaClipper (@LonelyProbe) July 15, 2015

I DON'T UNDERSTAND WHY PEOPLE HAVE TO USE SOCIAL MEDIA TO SHAME CERTAIN CELESTIAL BODIES LOOKING AT YOU @neiltyson pic.twitter.com/p1NEwsJvzs — Anne Thériault (@anne_theriault) July 15, 2015

But no worries everyone, Tyson and Pluto have made up.