For them, experiencing a total solar eclipse is an otherworldly thrill that begs to be repeated
Australian psychologist Kate Russo has seen 13 total solar eclipses since 1999.It was 25 years ago when Kate Russo saw her very first total solar eclipse.
She is one of many eclipse chasers who have arrived in North America in recent days.
Others, like Ms Russo, pursue the indescribable feeling that comes with seeing a total solar eclipse in person.
A total solar eclipse, by definition, occurs when the moon's shadow covers the sun's rays entirely, plunging those in the shadow's path into darkness for a few minutes.
Ms Russo said the experience inspired her to study people's emotional response to witnessing a total solar eclipse.
A photo captured by Patrick Poitevin during a total solar eclipse in Indonesia in March 2016.Mr Maley, who lives in Arizona, has seen 83 eclipses since 1970 - including annular, partial and total solar eclipses - across 42 countries.
Also en route to Mexico is British eclipse chaser and retired material scientist Patrick Poitevin, who is on a quest to catch his 26th total solar eclipse.
For those catching their first-ever solar eclipse this year, the seasoned chasers had one piece of advice: put away the camera and enjoy the moment.
Solar eclipse spectacle set to grip North America again.
How lucky is that? The US will witness its second total solar eclipse in seven years on 8 April.