# Scientists Believed This Near-Earth Object Was an Asteroid for 28 Years. They Were Wrong

> **Newsylist Open Intelligence Dossier** · First detected: 2026-07-21 13:29 UTC · Category: Science · Sources: 5 · Current Velocity: 2.8

## Executive Summary
A near-Earth object misidentified as an asteroid for 28 years has been revealed as a 'dark comet.'

## Intelligence Brief
Astronomers have discovered that a near-Earth object, previously categorized as an asteroid for nearly three decades, is actually a comet. The object is described as a "dark comet" possessing a weak tail.


Coverage from Universe Today, Sci.News, IFLScience, and Gizmodo emphasizes the object's proximity to Earth, noting it came within 2 million miles of the planet. The reports highlight the long-term misidentification of the object's nature.


Future observations will likely focus on the behavior of this comet and its weak tail as it continues its trajectory.

## Verified Facts & Key Claims
### How long was the object misidentified?
Scientists believed the object was an asteroid for 28 years.

### How close did the object get to Earth?
According to IFLScience, the object got within 2 million miles of Earth.

### What makes this comet different from typical ones?
It is described as a "dark comet" with a weak tail.

## Key People, Organizations & Locations
ASTEROID, Scientists Believed This Near-Earth Object Was, Years They Were Wrong, Astronomers Catch, Dark Comet Red-Handed, Puzzling Near-Earth Asteroid Turns Out, Be Comet, Weak Tail

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Space | After nearly 30 years, NASA realized this near-Earth asteroid is actually a comet | 2026-07-21 11:30 | [Source Link](https://news.google.com/rss/articles/CBMiggJBVV95cUxPM01nOGxUbE9lVnZyQ09KT29tX2FmR2F1cEdoM044UEtJdEp4NGxRYzdTbFdRejRCT3k4UWJhWnlucjRjRHMyWXE1a3JoUXI3SDlTMmpkVkcyLVR3WHFZb3Y1TUx4SmdZQXN3ZUY3dnNSUEQ0MzBFVXFUWnhtY1FDQjI1bWZKVGs5a0V0bXhqbS1OVnN0M1gyYVNSSElhc0NuWVVzbHhNOUJpcjNvd3Z5Nkd5SWJfRW8zdHUwVlB0dFdTaUVkTkFnZG1EN2c5Z3hfZHBLUDN0cjZpYXJZQnBlblJiMHRPdzhpaEIwY3EwX1k0X0RURGk0QW1CQ2FfbW5hRXc?oc=5) |
| Universe Today | Astronomers Catch a "Dark Comet" Red-Handed | 2026-07-21 11:30 | [Source Link](https://news.google.com/rss/articles/CBMihwFBVV95cUxNbURKTTNHU0M3R3VNYlpaaXlBTFdRZEhLeTR1VTFNNUo3VWtWdjdLVUtDd2pRN2p5UlhrTjBET0VsWTUyd0NhTnplam93Zzd6b0VBYXF6Tmp3VXNsUGtha3JzTi1xRGx3bFRjSmlJNUZLUUNLemhlSE1MajNrR2VfM0VNaXlrcFk?oc=5) |
| Sci.News | Puzzling Near-Earth Asteroid Turns Out to Be Comet with Weak Tail | 2026-07-21 11:30 | [Source Link](https://news.google.com/rss/articles/CBMiakFVX3lxTFBkZm1NY1JNQkhYaUZNN3hJRTJkaWVQVjRINXRSdkhyLU5ycEdyQ2NDWTJDVHpOR3lTR3hzUjFQQnJaZ09CMXAtS1Y4bHZvUWtBVUVieXpZRFhaV2d5UUJ0cVVIU2gtSXVlWUE?oc=5) |
| IFLScience | A Dark Comet Was Hiding Right Under Our Noses And Got Just 2 Million Miles From Earth | 2026-07-21 11:30 | [Source Link](https://news.google.com/rss/articles/CBMiugFBVV95cUxPdUtkaFdKS24xYVQxZGExUi15Y2FBQUZNZS1SZjdzc3NCZzYybld1bjk5Z01QVXVJM0E0REltN3llaXJlTTJ0UVN0c2YyT1dkRHdzRmdHQmx6ajBEcDIxZld6S0FTZHg1WnZOanpRZk4taGlYUlR5c1BSTDZWaTdOOVBDSlJlU2YtWmdQTTBVTFgxYWNqOXpkT2xyZkJXUVc3SmFSQU1uSW1aaTlIWlBVam5udllJZW5tYlE?oc=5) |
| Gizmodo | Scientists Believed This Near-Earth Object Was an Asteroid for 28 Years. They Were Wrong | 2026-07-21 11:30 | [Source Link](https://news.google.com/rss/articles/CBMiuAFBVV95cUxON1BsTDUtM0szOU9jQmxJd2VEUGNES1dvT1BwXzRjRlBndm5NMl9vbFNaQXFTSUVONVlSajFYc0pZY3pjZ09lY0NBeGd5LVZqblFaU0xvRjNQb2V0eHdieXhoVnFJMGV0T2lxUldfNUV5YWlocU5yUVpjYUVheTVYSE9BWk55S1RzTlplZjhlV0xfMzVhcmtrTVlHdzlxdFB3Q3ZmR0sxRlhEN19saFNnOTdsU0p3bEpF?oc=5) |

---
*Canonical Source: https://www.newsylist.com/trend/2026-07-21/scientists-believed-this-near-earth-object-was-an-asteroid-for-28-years-they*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*