<p>If you're thinking of the NASA <a href="https://dart.jhuapl.edu/Mission/index.php" rel="nofollow noreferrer">DART mission</a> (Double Asteroid Redirection Test), it hasn't launched yet.
It's supposed to depart Earth between November 2021 and February 2022, and encounter <a href="https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=65803" rel="nofollow noreferrer">65803 Didymos</a> and impact its satellite Dimorphos in September or October 2022.</p>
<p>DART is the first part of the <a href="https://www.esa.int/Safety_Security/Hera/Asteroid_Impact_Deflection_Assessment_AIDA_collaboration" rel="nofollow noreferrer">AIDA collaboration</a> (Asteroid Impact and Deflection Assessment).
The second is the ESA <a href="https://www.heramission.space/" rel="nofollow noreferrer">Hera mission</a>, planned to launch in 2024 and survey the Didymos system in 2026.
Better answers to your questions will be available after that.</p>

CC BY-SA 4.0
2021-07-11T14:23:09.047Z
If it is the mission I mean, I wonder why I (think I) heard something about it in 2019 or 20.
John
CC BY-SA 4.0
2021-07-11T18:48:27.507Z
@John There are [news articles](https://dart.jhuapl.edu/News-and-Resources/) about DART as early as 2016.
Mike G
CC BY-SA 4.0
2021-07-12T01:24:29.023Z
@John from some questions (and their linked articles) in Space SE we can see that there was a lot of press in **2017** when the mission officially entered preliminary mission design phase, and again in **2019** when **SpaceX was selected** as the launch provider for this deep space mission. Deep space missions can sometimes generate a decade or more of news cycles before they launch; probably JWST is the most notorious example of that, but for other reasons.
uhoh
CC BY-SA 4.0
2021-07-12T01:24:52.457Z
2017: [What can be learned from NASA's choice of Didymos B for the Double Asteroid Redirection Test](https://space.stackexchange.com/q/22161/12102) 2019: [What is the largest body in the solar system we could meaningfully and accurately adjust the orbit of?](https://space.stackexchange.com/a/34066/12102) and [Highest velocity impact between a spacecraft and a solar system body? What about for a dedicated impactor (spacecraft component)?](https://space.stackexchange.com/q/34096/12102) and [How many SpaceX 2nd stages are in heliocentric orbits?](https://space.stackexchange.com/q/35680/12102)
uhoh
CC BY-SA 4.0
2021-07-12T01:38:11.373Z
@John there is also the possibility (this happens to me a lot!) that some aspects of several other missions that landed tiny probes on asteroids, or that gently collided with them to capture samples for return to Earth are getting mixed in as well:
uhoh
CC BY-SA 4.0
2021-07-12T01:38:15.863Z
[Communication with Philae stopped being possible in 2016](https://en.wikipedia.org/wiki/Philae_(spacecraft)#Reawakening_and_subsequent_loss_of_communication) and [Hyabusa-2 rovers were deployed on Ryugu in 2018](https://en.wikipedia.org/wiki/Hayabusa2#Rovers) and [OSIRIS-Rex sample return mission collection sites were announced in 2019](https://en.wikipedia.org/wiki/OSIRIS-REx#Sample_acquisition) and took place in 2020.
uhoh
CC BY-SA 4.0
2021-07-12T05:01:16.367Z
@uhoh 2017 or 18 is too early, I may have been confused because of the reports about SpaceX being selected to conduct the mission in 2019, or because it was mentioned in connection with Hayabusa's sample landing on Earth. But it's definitely the Didymos mission I meant.
John
CC BY-SA 4.0
2021-07-11T13:59:39.980Z
2021-07-11T13:59:39.980Z
Mike G
<p>About two or three years ago I think a probe whose name I forgot has been crashed into an asteroid at high speed to see what would happen if we tried to collide something with an asteroid on Earth course. The asteroid the probe was crashed into had a moon as well. What were the results of the crash? Did the asteroid slow down? Did it change direction? What happened to its satellite?</p>

CC BY-SA 4.0
2021-07-11T14:47:54.293Z
There have been several missions to minor planets in the last decade; [Hayabusa2](https://en.wikipedia.org/wiki/Hayabusa2) matches your timeline, and did use a kinetic impactor. Is that the one?
HDE 226868
CC BY-SA 4.0
2021-07-11T15:46:36.700Z
@HDE226868 No, the DART's mission's descriptions matches exactly what I've meant (it's actually the asteroid's moon, not the primary body, that is to be targeted). I now think I heard about DART because of Hayabusa's successful landing with the sample. Someone in media then probably mentioned that a next goal would be to perform the asteroid impactor mission DART to test what would happen in such attempt.
John
CC BY-SA 4.0
2022-12-14T16:42:10.003Z
@John DART impacted in 2022. You may be thinking of Osirus-REX or Deep Impact.
Deko Revinio
<asteroids><collision><space-probe>
Any results from the probe that has been crashed into an asteroid once?
John
# Any results from the probe that has been crashed into an asteroid once?

(Asked by: username_0 on 2021-07-11)

About two or three years ago I think a probe whose name I forgot has been crashed into an asteroid at high speed to see what would happen if we tried to collide something with an asteroid on Earth course. The asteroid the probe was crashed into had a moon as well. What were the results of the crash? Did the asteroid slow down? Did it change direction? What happened to its satellite?

**Tags:** asteroids, collision, space-probe

> **Comments:**
> **username_1**: There have been several missions to minor planets in the last decade; [Hayabusa2](https://en.wikipedia.org/wiki/Hayabusa2) matches your timeline, and did use a kinetic impactor. Is that the one?  
> **username_0**: @username_1 No, the DART's mission's descriptions matches exactly what I've meant (it's actually the asteroid's moon, not the primary body, that is to be targeted). I now think I heard about DART because of Hayabusa's successful landing with the sample. Someone in media then probably mentioned that a next goal would be to perform the asteroid impactor mission DART to test what would happen in such attempt.  
> **username_2**: @username_0 DART impacted in 2022. You may be thinking of Osirus-REX or Deep Impact.  

---

## 1 answers

### Answer by username_3 on 2021-07-11. Score: 2

If you're thinking of the NASA [DART mission](https://dart.jhuapl.edu/Mission/index.php) (Double Asteroid Redirection Test), it hasn't launched yet.
It's supposed to depart Earth between November 2021 and February 2022, and encounter [65803 Didymos](https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=65803) and impact its satellite Dimorphos in September or October 2022.

DART is the first part of the [AIDA collaboration](https://www.esa.int/Safety_Security/Hera/Asteroid_Impact_Deflection_Assessment_AIDA_collaboration) (Asteroid Impact and Deflection Assessment).
The second is the ESA [Hera mission](https://www.heramission.space/), planned to launch in 2024 and survey the Didymos system in 2026.
Better answers to your questions will be available after that.

> **Comments:**
> **username_0**: If it is the mission I mean, I wonder why I (think I) heard something about it in 2019 or 20.  
> **username_3**: @username_0 There are [news articles](https://dart.jhuapl.edu/News-and-Resources/) about DART as early as 2016.  
> **username_4**: @username_0 from some questions (and their linked articles) in Space SE we can see that there was a lot of press in **2017** when the mission officially entered preliminary mission design phase, and again in **2019** when **SpaceX was selected** as the launch provider for this deep space mission. Deep space missions can sometimes generate a decade or more of news cycles before they launch; probably JWST is the most notorious example of that, but for other reasons.  
> **username_4**: 2017: [What can be learned from NASA's choice of Didymos B for the Double Asteroid Redirection Test](https://space.stackexchange.com/q/22161/12102) 2019: [What is the largest body in the solar system we could meaningfully and accurately adjust the orbit of?](https://space.stackexchange.com/a/34066/12102) and [Highest velocity impact between a spacecraft and a solar system body? What about for a dedicated impactor (spacecraft component)?](https://space.stackexchange.com/q/34096/12102) and [How many SpaceX 2nd stages are in heliocentric orbits?](https://space.stackexchange.com/q/35680/12102)  
> **username_4**: @username_0 there is also the possibility (this happens to me a lot!) that some aspects of several other missions that landed tiny probes on asteroids, or that gently collided with them to capture samples for return to Earth are getting mixed in as well:  
> **username_4**: [Communication with Philae stopped being possible in 2016](https://en.wikipedia.org/wiki/Philae_(spacecraft)#Reawakening_and_subsequent_loss_of_communication) and [Hyabusa-2 rovers were deployed on Ryugu in 2018](https://en.wikipedia.org/wiki/Hayabusa2#Rovers) and [OSIRIS-Rex sample return mission collection sites were announced in 2019](https://en.wikipedia.org/wiki/OSIRIS-REx#Sample_acquisition) and took place in 2020.  
> **username_0**: @username_4 2017 or 18 is too early, I may have been confused because of the reports about SpaceX being selected to conduct the mission in 2019, or because it was mentioned in connection with Hayabusa's sample landing on Earth. But it's definitely the Didymos mission I meant.  

---

