Comet NEOWISE Just Survived Its Closest Brush With the Sun
Comet C/2020 F3 (NEOWISE) reached perihelion on July 3, made it through intact, and is shaping up to be the best naked-eye comet in over two decades.
Today’s the day comet NEOWISE found out if it could take the heat. Comet C/2020 F3, officially designated NEOWISE after the NASA space telescope that spotted it back on March 27, reached perihelion this morning — its closest approach to the Sun, at roughly 0.29 AU, or about 43 million kilometers. For context, that’s well inside Mercury’s orbit. A lot of comets don’t come back from that kind of proximity.
This one did. NEOWISE held together through perihelion, which is honestly the part I was most nervous about. Comets are basically loose bundles of ice, dust, and rock, and a close solar pass can be enough to crack them apart or vaporize them outright — remember comet ATLAS earlier this year, which fragmented before it ever got interesting? NEOWISE didn’t pull an ATLAS. It came through intact, and early reports suggest it’s putting on a real show.
Why this one actually matters to skywatchers
Most comets that swing through the inner solar system are telescope-only affairs — faint smudges you need serious equipment to appreciate. NEOWISE is different. Observers are already calling it the brightest comet visible from the Northern Hemisphere since Hale-Bopp lit up the sky back in 1997. If you weren’t around or weren’t looking up in the late ’90s, this is basically your first shot at a comet you can just walk outside and see with your own eyes, no telescope required.
That’s a 23-year gap. Naked-eye comets aren’t rare because comets are rare — they’re rare because most comets are either too small, too dim, or too far away to punch through Earth’s atmospheric haze and light pollution. Getting a comet that’s both close enough and bright enough to see unaided is a genuine coincidence of orbital geometry and composition, and it doesn’t happen often.
What happens next
Perihelion is really just the halfway point of the interesting part. NEOWISE is now heading back out of the inner solar system, and it should stay visible through the rest of July as it moves into better viewing position in the evening sky rather than the pre-dawn window it’s been in. Comets often brighten for a bit after perihelion before they start to fade, so there’s a decent chance the best viewing is still ahead of us this month, not behind us.
If you want to catch it, the advice going around is straightforward: get away from city lights, look low on the horizon before dawn or after dusk depending on the week, and bring binoculars even if you’re hoping to see it with your eyes alone — they’ll help you find it and will make the tail much more obvious. Comet tails point away from the Sun, so expect a faint streak trailing the coma rather than anything dramatic like you’d see in a movie.
I’ll be honest, I’ve got low expectations trained into me by a decade of “comet of the century” hype that fizzles into a smudge only visible in long-exposure photos. But NEOWISE surviving perihelion intact and already reading as naked-eye bright is a good sign. Worth setting an alarm for the next clear night.