Former President Joe Biden has been diagnosed with an “aggressive” form of prostate cancer[1] that has spread to his bones. But what does it mean for this type of cancer to be called aggressive?
As a urologic surgeon[2] who specializes in diagnosing and treating prostate cancer, I often explain to my patients that aggressiveness isn’t...
My telescope, set up for astrophotography in my light-polluted San Diego backyard, was pointed at a galaxy unfathomably far from Earth. My wife, Cristina, walked up just as the first space photo streamed to my tablet. It sparkled on the screen in front of us.
“That’s the Pinwheel galaxy[1],” I said. The name is derived from its shape...
On April 14, 2025, Blue Origin[1] launched six women – Aisha Bowe, Amanda Nguyễn, Gayle King, Katy Perry, Kerianne Flynn and Lauren Sánchez – on a suborbital journey to the edge of space.
The headlines called it a historic moment[2] for women in space[3]. But as a tourism educator, I paused – not because I questioned their...
Read more https://theconversation.com/in-what-order-did-the-planets-in-our-solar-system-form-252262