Sia is pulling the plug on her marriage … because she just filed for divorce.

The “Unstoppable” singer beelined it to court Wednesday and filed to divorce her husband, Daniel Bernard, after only 26 months of marriage.

According to the docs, obtained by TMZ, Sia lists Tuesday as the date of separation … meaning she wasted almost no time filing to end things.

Kylie Jenner‘s office building served as the nearby backdrop for a police apprehension … because cops arrested a guy not far from the building, and they drew their guns!!!

Photogs who were camped in the area of Kylie’s office hoping for a glimpse of the reality TV star got more than they bargained for Tuesday when a police bust played out right in front of them.

Check out the gallery … Los Angeles County Sheriff’s deputies rolled up on a guy on the sidewalk outside Kylie’s office and arrested him with their pistols drawn.

Kris Jenner‘s also got a tie-in here … her office is nearby too.

Gayle King is over the moon about yesterday’s return trip by NASA astronauts from the International Space Station and their smooth landing back on Planet Earth — especially with her own space odyssey on the horizon.

We caught up with Gayle, and she told us she’s been in constant contact with her fellow trailblazers on Blue Origin’s upcoming all-woman crew for their own mission to space — and according to her, they’re locked in, pumped up, and ready to blast off!

Gayle’s set to soar alongside an out-of-this-world girl gang — pop icon Katy Perry, journalist and author Lauren Sánchez, NASA rocket scientist Aisha Bowe, civil rights activist Amanda Nguyen, and film producer Kerianne Flynn.

But back to those previously “stranded” astronauts Butch Wilmore and Suni Williams — Gayle dissects their ordeal further, pointing out how their one-week mission stretched into a nine-month saga … the same length as a full pregnancy.