Mark Kaufman

As a former park ranger, Mark regularly avoided snoozing bears while walking to work. Now a science writer living in New York City, Mark regularly dodges humans while dashing to the train.

6.21.2018 3:00 PM

Summer Solstice: 5 Ways We're Trying to Better Understand the Sun

It's an enigmatic ball of gas.

8.21.2017 5:18 PM

U.S. Map Shows Where It's Cloudy for Today's Total Solar Eclipse

It's looking good.

8.21.2017 4:00 PM

How to Find the Time of the Total Solar Eclipse Today Using Your Zip Code

It depends on what part of America you’re standing in.

8.20.2017 7:03 PM

What Happens If You Look at an Eclipse? You Sunburn Your Eyeballs

Don't be like Newton – wear solar shades during the total solar eclipse.

8.20.2017 2:02 AM

The Last Time There Was a Total Solar Eclipse People Freaked Out

‘I heard screams.’

8.19.2017 9:04 PM

The Solar Eclipse Will Touch All of North America on Monday

It’s happening in your neighborhood, whether you like it or not.

8.18.2017 5:03 PM

How to Make a Pinhole Camera So You Don't Have to Buy Eclipse Glasses

All you basically need are scissors, paper, tape — and a solar eclipse.

8.11.2017 9:26 PM

Space Station Astronaut Films a Solar Eclipse From Space

8.11.2017 5:46 PM

Russian-Made Bright 'Star' Satellite Mayak Fails

Dark sky advocates are relieved.

8.10.2017 7:42 PM

Chinese To Build a Simulated Mars Colony in Remote, Red Desert

It's a good place to prep astronauts for a callous world.

8.10.2017 6:12 PM

NASA Completes Final Test on SLS Mega-Rocket Engines: What's Next

These engines will eventually blast astronauts toward Mars.

8.10.2017 4:32 PM

When Was the Last Total Solar Eclipse in the USA? It's Been a Bit

It hasn't happened here for nearly 40 years.

8.9.2017 11:11 PM

Your T-Shirt Color Might Make Animals Think You’re a Predator

Seeing wildlife might mean sacrificing style.

8.9.2017 5:09 PM

Russian Rocket Launching Operator Glavkosmos Plans Moon Missions

Glavkosmos wants to hitch rides upon the powerful Soyuz rocket.

8.8.2017 7:49 PM

Why the Bloody Moon in Viral Poseidon's Temple Photo Looks So Big

It’s an illusion. Mostly.

8.7.2017 10:30 PM

Dragonglass, Rare in 'Game of Thrones,' Is Obsidian on Earth

Obsidian is a natural glass, ideal for destroying White Walkers.

8.7.2017 4:36 PM

Russia's Roscosmos Will Drop a Big Red Ball Onto Scorching Venus

Inside will be a heat resistant lander.

8.6.2017 10:30 AM

First Pulsar Star Discovered 50 Years Ago, Future Interstellar GPS

Scientists think pulsars might one day guide travelers through interstellar space.

8.4.2017 8:52 PM

Cassini To Search For Tiny Moons in Saturn's Rings Before Death

So far, the moons have eluded scientists.

8.4.2017 4:32 PM

This Is What Typhoon Noru Looks Like From Space

Typhoon Noru is two weeks old and headed toward Japan.