NASA CONFIRMED Apophis Is On a Closer Path With Earth Than Models Predicted

[00:00:00]Right now, a 340-m chunk of rock named Apophis is falling toward the inner solar system on a trajectory that on Friday, April 13th, 2029, will carry it closer to Earth than the geostationary satellites that beam our television signals. Near enough that roughly 2 billion people will watch it cross the night sky as a moving star with their naked eyes. And no large asteroid this size has ever been tracked passing this close in recorded history.

[00:00:27]Subscribe now if you want more stories like this. We go this deep into the real science every week. Let that settle for a second.

[00:00:35]A mountain of stone wider than three football fields laid end to end, threading inside our ring of satellites, inside 32,000 km, closer than the machines that carry our phone calls, our weather maps, our television. Roughly 2 billion people across Europe, Africa, and Western Asia will step outside on a spring evening and see a rock the size of a skyscraper move across the stars like a slow, silent spark. That is the stake. And beneath that headline, right now, this quarter in data most people will never read, radar is revealing something quieter. A subtle wrongness in where this rock is going. The date, meanwhile, is locked. Friday, April 13th, 2029.

[00:01:18]Not a maybe. Not a probability. It is coming. Stay with me.

[00:01:23]Because by the time this is over, you will never look at the night sky on Friday the 13th the same way again.

[00:01:29]And here I have to be completely honest with you. Because this story is strange enough without inflating it. NASA did not, in March of 2021, after a series of radar pings bounced off the rock from the 70-m Goldstone dish out in the California desert, a scientist at the Jet Propulsion Laboratory named Davide Farnocchia removed Apophis from the risk table for at least 100 years. Erased.

[00:01:52]The line struck clean through. So, if you came here for the end of the world, I'm going to disappoint you, but stay because the real story is subtler and stranger than anything anyone made up about it.

[00:02:05]Because when astronomers refined that orbit, when they pinned it down closer and closer to the meter, they found something they did not expect.

[00:02:13]This rock does not move exactly where gravity alone says it should.

[00:02:17]Sit with that. A mountain of stone older than the Earth's oceans falling through the vacuum of space, and it is quietly drifting off the path that pure gravity draws for it.

[00:02:28]Not by much, but measurably, persistently. We are not talking about a pebble getting knocked around by the solar wind. Apophis is 340 m of solid rock. Call it a hundred million tons, give or take.

[00:02:41]Nudging something that heavy off its course is like leaning on a freight train with one finger and watching it change tracks. It should not happen. And yet, measurement after measurement, the numbers keep landing just slightly off from where gravity says they belong.

[00:02:55]Let's start from the beginning because to feel why that is so strange, you have to understand how anyone knows where an asteroid is going in the first place.

[00:03:03]They use radar, and radar is simpler than it sounds. You point an enormous dish at the sky, you fire off a pulse of radio waves, and you wait for the echo to come back.

[00:03:14]The time it takes to return tells you exactly how far away the object is.

[00:03:18]The way the returning wave is stretched or squ- It is the same trick a bat uses in the dark to catch a moth. Scaled up to a dish 70 m across and a target millions of kilometers away, one clean ping, and you can pin a flying mountain's distance to within a few hundred meters, and its speed to a fraction of a kilometer per hour.

[00:03:37]And here is the thing about gravity.

[00:03:39]Gravity is arithmetic.

[00:03:41]Newton and Einstein handed us equations so precise that we can say where a planet will sit a thousand years from now, down to the second.

[00:03:49]You point a telescope at the coordinates the math spits out, and the object is there. Every time, for centuries, unless, and this is the whole mystery, some other force, something the equations never accounted for, is quietly leaning on it. Read that date again.

[00:04:06]Friday, April 13th, 2029.

[00:04:10]That part is not superstition. It is orbital mechanics. The math is that good. When your predictions land the second, and the rock still slides off the line you drew, it means something out there is touching it. Something the early models could only guess at.

[00:04:25]Because when scientists first tried to forecast where Apophis would be, there was one force they could not measure.

[00:04:31]One variable they had to estimate, because it isn't made of mass, and gravity has no equation for it.

[00:04:37]A force made not of stone, not of pull, but of sunlight itself.

[00:04:43]For years, that single unknown was the largest source of error in every prediction of where Apophis would be on that April night.

[00:04:50]So, now hold on to one question, because everything that follows hangs on it.

[00:04:55]What is pushing a mountain of rock off the path gravity drew for it?

[00:04:59]Gravity alone does not explain where Apophis is going. There is a second hand on the wheel. A force the early model And until you understand that force, you cannot understand why this rock is drifting off the map astronomers drew for it. The rock is still falling, and it is not falling straight.

[00:05:15]A force made not of mass, but of sunlight. It has a name, the Yarkovsky effect. And it is the reason a 340-m rock does not travel where gravity alone would send it.

[00:05:26]Sunlight, it turns out, has weight-like consequences, and on Apophis, it has been quietly rewriting the arithmetic of April 13th, 2029 the entire time.

[00:05:36]But to understand how a whisper of warmth ends up steering a mountain, you have to go back to the moment we first saw this thing coming.

[00:05:43]Apophis was discovered in June 2004, and within days, not months, days, it did something no asteroid had ever done.

[00:05:52]It triggered the highest impact hazard rating any near-Earth object has ever received. For a short, real window of time, the calculation on the screen said there was a 2.7% chance, not a doomsday fantasy, a genuine, sourced 1 in 37 figure sitting in JPL's own tables on a rock the size of a cruise ship. Then the numbers went to zero. This is the part the headlines never linger on.

[00:06:17]Better observations came in and they erased that 2.7% almost as fast as it had appeared.

[00:06:23]Then astronomers went hunting for the next threat. A feared 2036 keyhole passage, a tiny gravitational gate in space that, if Apophis slipped through it, could have bent its path toward a later impact, erased, too.

[00:06:37]Then they cleared everything through 2116, a full century, closed. Case closed.

[00:06:44]Except for one force the early models could only guess at. Here is that force.

[00:06:49]Picture the asteroid tumbling slowly through space, one face turned toward the sun.

[00:06:55]That face absorbs sunlight and warms, the way a stone left out on a summer afternoon holds heat. So, the warm side turns away from the sun and out in the cold of space, it does the only thing a warm object can do.

[00:07:06]It radiates that heat back out as infrared light. And light, even the light leaving a rock, carries a faint push.

[00:07:13]Every photon of heat that streams off that cooling face nudges the asteroid very gently in the opposite direction.

[00:07:20]That is the Yarkovsky effect. Sunlight in, infrared out, and a continuous, impossibly soft shove, like a thruster you could never see and never hear.

[00:07:31]Think about that for a second. Sunlight, the thing you feel as warmth on your skin, is strong enough to move a mountain of rock through space. Not in a flash, not in a collision, just by being absorbed and then hours later quietly leaving as heat.

[00:07:45]It is the gentlest force in this entire story, and it may be the most important one, because it does not stop.

[00:07:53]This thermal push nudges Apophis about 170 m per year off its purely gravity Every single year, in the same patient direction, the rock is shoved a little further from where gravity alone said it should be. And 170 m a year sounds like nothing.

[00:08:09]It sounds like a rounding error against a rock falling through millions of kilometers of empty space. So, now multiply it by decades, all in the same direction, and ask yourself why the models struggled to pin down 2029.

[00:08:22]A quarter century of tumbling toward that date, and every year of it the sunlight adding another 170 m, and another, and another, until the drift stops being a footnote and starts being the whole question.

[00:08:35]And here is why it stayed uncertain for so long. The strength of that push is not a constant you can look up. It depends on the rock itself, how fast it spins, the exact shape of it, what its surface is made of, how quickly that surface soaks up heat and lets it go.

[00:08:51]Change the spin, and the For years, all of those things were estimates. Educated ones, but estimates. And you cannot compute exactly where a rock will be in 25 years when the very force steering it is a number you're still guessing at.

[00:09:06]That is precisely why the early models could not nail the 2029 distance.

[00:09:11]The gravity they had cold. The sunlight they did not. So, they went to get it cold.

[00:09:17]In 2021, NASA turned the Goldstone radar dish, a machine that reaches out and touches an asteroid with a beam of radio waves, then listens for the echo, onto Apophis and pinged it directly.

[00:09:31]This is the sharpest look we've ever gotten at this rock's motion.

[00:09:34]And when the new echoes came back and the orbit was recomputed with that fresh data folded in, the predicted 2029 miss distance moved measurably away from the older tables. The numbers that had sat not because Apophis suddenly changed its mind, but because for the first time we could see how much the sunlight had already bent the path we thought we knew.

[00:09:56]And that is the quiet thing under the headline.

[00:09:58]Not an impact, not a warning, a correction.

[00:10:03]The map astronomers had drawn was drawn slightly wrong in the one place they'd had to guess, and the radar just proved it.

[00:10:09]Which raises the question that should keep you here.

[00:10:12]If a force this quiet could move the numbers once, could already shift a prediction everyone trusted, ask yourself what it is still doing right now on the way to the date.

[00:10:23]Because the Yarkovsky push did not switch off in 2021, it is happening this second.

[00:10:29]Sunlight is landing on Apophis as you listen to this, warming one slowly turning face, and that heat is streaming back into the dark, shoving the rock another fraction of its 170 m closer to Friday, April 13th, 20 The rock is still falling, and it is still being steered.

[00:10:46]So, one measurement, however sharp, is no longer enough.

[00:10:49]You cannot chase a moving force with a single snapshot from a dish on the ground.

[00:10:54]And this is where the story stops being about calculation and becomes about pursuit.

[00:10:59]Because we are no longer content to watch Apophis from a distance and do the math.

[00:11:03]Something is being sent after it.

[00:11:05]A spacecraft is now burning through space toward a rendezvous no probe has ever attempted to reach Apophis in the exact moments after Earth's gravity has its way with the rock, to watch a mountain be reshaped in real time. It has one window, one date, and no second chance. One window, one date, no second chance.

[00:11:24]And the spacecraft has a name.

[00:11:26]It is called Osiris Apex, the repurposed Osiris Rex, the survivor of a mission that in 2020, that spacecraft descended to a rock called Bennu, pressed its arm into the surface, and lifted a fistful of the early solar system into its belly.

[00:11:42]It could have gone quiet after that. Its job was done.

[00:11:45]Instead, mission planners redirected it.

[00:11:48]Same machine, new name, new target, and set it burning across the inner solar system on a path that ends at Apophis.

[00:11:55]Its assignment is almost unreasonably precise.

[00:11:58]Rendezvous just after the 2029 flyby to measure how Earth's gravity reshapes it.

[00:12:04]Not before, after.

[00:12:06]Because the interesting thing does not happen on the way in.

[00:12:09]It happens in the moments Apophis is closest, when it passes inside 32,000 km of the surface, nearer than the satellites that carry our television signals, and Earth's pull reaches out and grips it. The 2029 approach is so close that Earth's tidal pull may trigger landslides and quakes on the asteroid surface. Think about that.

[00:12:29]Boulders that have sat frozen in place for longer than there have been oceans on this planet suddenly sliding, dust lifting, the face of the rock rearranging itself in a few hours of the closest gravitational squeeze it has ever felt.

[00:12:41]For a few hours, a dead world will come briefly, violently alive. No laboratory could build that experiment. No budget could fund it. You cannot pay to drag a 340-m asteroid past the Earth on command.

[00:12:55]It is a natural experiment that runs exactly once, and OSIRIS-APEX one shot to be in the right place to see it.

[00:13:02]And when the rock passes, that instant is gone forever. There is no rewind. The physics happen, the surface settle Now, step back from the numbers for a moment and think about what this actually represents. A machine we built, chasing a rock we cannot control, to a date we cannot move. Because here is the payoff.

[00:13:20]This is the part the headline promised.

[00:13:22]Apophis really is threading a path closer than the models drew. Not because anyone made it up, but because sunlight has been pushing it there the whole time. Let me say it plainly.

[00:13:32]When NASA refined the tracking, Goldstone radar bouncing signals off the rock combined with the relentless compounding Yarkovsky push, that impossibly gentle thruster of re-radiated heat, nudging Apophis roughly 170 m off its gravitational path every single year, the numbers moved.

[00:13:50]The refined trajectory does not sit where the older orbital models drew it.

[00:13:54]It sits nearer.

[00:13:56]This is the closest approach of a large near-Earth asteroid in modern history, and it is not finished moving. The Yarkovsky drift does not stop. Sunlight will keep falling on that tumbling surface between now and Friday, April 13th, 2029, and it may nudge the rock yet again before the date arrives.

[00:14:14]That is the honest, living edge of this story. The number is real, and it is still being written.

[00:14:21]The window is finite. It is shrinking.

[00:14:23]It is irreplaceable.

[00:14:25]There is no replacement encounter, no second Apophis, no do-over scheduled for a decade later when we are better prepared.

[00:14:33]The rock arrives on one Friday at one hour, and the calendar does not move to suit us. The physics do not negotiate.

[00:14:39]And so, a small group of people watches.

[00:14:42]Think about who is actually doing this.

[00:14:45]A handful of engineers and orbit specialists tracking a mountain they can only estimate.

[00:14:49]Calculating the push of sunlight on Some of them will be at their consoles late into the night when the flyby comes.

[00:14:55]Watching numbers scroll across a screen while the rest of the world sleeps.

[00:14:59]We cannot see Apophis spin in detail. We cannot weigh it exactly. We model its shape, guess at its surface, and from those guesses we predict where a mountain will be years from now to within a few kilometers.

[00:15:13]That is the quiet miracle underneath the headline. Not fear, but the sheer audacity of catching sunlight in the act of of a rock.

[00:15:21]Consider what the rock itself is.

[00:15:23]Apophis is older than every civilization that has ever counted the days.

[00:15:28]It is older than the pyramids, older than language, older than the first fire anyone struck on purpose. It has been falling through the dark since before the Earth had a face we would recognize.

[00:15:39]And it is arriving on a Friday we can already circle on a calendar. A specific square. We wait for it the way you wait for something you cannot stop and would not want to. So, we wait.

[00:15:49]We wait for the next tracking update, for the radar to refine the number one more time.

[00:15:54]We wait for OSIRIS-APEX to arrive and watch a mountain be reshaped in real time. If you want to be here the moment the data comes down, the moment NASA confirms exactly how close an OSIRIS-APEX reaches the rock, subscribe right now and turn on notifications. No fake signals, no invented doomsday, just the measurements when they land and what they actually say.

[00:16:16]Drop a comment with the number that unsettled you most. The 32,000 km or the 170 m a year. And if someone you know still thinks Apophis is coming to hit us, send them the honest version. It is stranger than the myth. There is one more thing worth sitting with, and it points to where this goes next. It began at Bennu.

[00:16:36]The asteroid it already touched. The rock whose sample now sits in a sealed clean room in Houston, being opened grain by grain. And that sample is quietly doing something no one fully expected. It is rewriting what we thought asteroids are even made of.

[00:16:50]What came back is not the dry dead rubble the textbooks promised. That is a different story for another night.

[00:16:57]For now, the date is locked. Friday, April 13th, 2029.

[00:17:02]The spacecraft is burning toward it across the dark. The sunlight keeps pushing, 170 m a year, patient and relentless and utterly indifferent to us.

[00:17:13]And somewhere out past the orbit of the moon, closer with every hour, the rock is still falling. Thanks for watching.