Questions tagged [dart]

The Double Asteroid Redirect Test (DART) is a NASA space mission to testing a method of planetary defense against near-Earth objects (NEOs). Launched from Earth in November 2021, the mission will deliberately crash a space probe into the minor-planet moon Dimorphos of the double asteroid Didymos to assess the future potential of a spacecraft impact to deflect an asteroid on a collision course with Earth through a transference of momentum. (from Wikipedia)

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6 votes
1 answer
555 views

Why aren't smaller fairings used for smaller payloads?

I saw this picture of the DART spacecraft being encapsulated in its payload fairing. Why doesn't SpaceX manufacture a smaller (shortened or thinned) fairing for the spacecraft? It reduces mass and is ...
8 votes
2 answers
118 views

Offset of the DART roll out solar arrays [duplicate]

Looking at images of the DART space craft with the solar cells fully extended, the solar cells on each side of the craft are offset from one another, instead of being inline, as the picture below ...
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7 votes
2 answers
837 views

How many images of Didymos could be transmitted by Dart between the first full size image and the impact?

Dart is approaching Didymos B aka Dimorphus with a speed of 6.6 km/s. How many images could be taken and transmitted between Didymos B just filling the entire image and the last image just before ...
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26 votes
3 answers
5k views

How will DART be able to hit a 170 meter rock dead-center at over 6000 m/s? What technologies will be use and how will they work together?

The DART spacecraft will ultimately be a kinetic energy impactor, using its 500 kg mass at a relative velocity of over 6000 m/s to slightly change its target 65803 Didymos's companion Dimorphos's ...
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1 vote
1 answer
285 views

Deep space marksmanship; will DART's intercept and impact trajectory represent the best ever if successful? If so, by how much?

The DART spacecraft will ultimately be a kinetic energy impactor, using its 500 kg mass at a relative velocity of over 6000 m/s to slightly change its target 65803 Didymos's companion Dimorphos's ...
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2 votes
1 answer
129 views

Will DART fire its ion engine to accelerate prior to impact?

I'm an avid KSP player. Like some of them, I've been playing the DART simulation on the game. I've typically achieved impact velocities of 5-7 km/s, the higher end being achieved by propulsive ...
1 vote
1 answer
239 views

How does a 22 dBi X-band "patch" antenna get so much gain and how well behaved is its high-gain radiation pattern?

@NgPh's answer to How will the LICIACube cubesat transmit DART impact images back to Earth? What kind of antenna and radio will it use? quotes LICIACube on DART mission: an asteroid impact captured by ...
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2 votes
1 answer
244 views

How will the LICIACube cubesat transmit DART impact images back to Earth? What kind of antenna and radio will it use?

MarCO The Mars Cube Ones or MarCOs were 6U cubesats that were deployed in deep space during the InSight mission to observe it during a critical, dynamic period of its mission, in this case the N ...
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4 votes
0 answers
104 views

Why is the Deep Space Network now testing an asteroid redirection mission that hasn't launched yet?

The Double Asteroid Redirection Test is a planned demonstration of the ability of a spacecraft to impact into and redirect the path of an asteroid. The test is part of plans to develop a system to ...
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3 votes
1 answer
172 views

Where all is ROSA (roll-out solar array) planned to be used?

A comment below Why are DART's solar panels aligned like this? says: Maybe could have something to do with how much space they take up with rolled all the way in? This is also the first use of ...
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3 votes
0 answers
93 views

Was Dart antenna tested using a DSN antenna located in Australia?

So recently a tweet by a bot which tracks communications by the Deep Space Network stated that: DSS 43 receiving data from Double Asteroid Redirection Test at 312.5kb/s. IN LOCK IN LOCK 1 TURBO 11:11 ...
9 votes
2 answers
592 views

How many SpaceX 2nd stages are in heliocentric orbits?

I can think of one particularly famous SpaceX 2nd stage in heliocentric orbit that even has its own website: https://www.whereisroadster.com/ and I know one was used to send DSCOVR towards Sun-Earth ...
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2 votes
1 answer
211 views

Highest velocity impact between a spacecraft and a solar system body? What about for a dedicated impactor (spacecraft component)?

In this answer I mention the proposed impact of DART: Double Asteroid Redirection Test (DART) Mission Double Asteroid Redirection Test The Double Asteroid Redirection Test (DART) Element of the ...
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6 votes
0 answers
206 views

What can be learned from NASA's choice of Didymos B for the Double Asteroid Redirection Test

The NASA News item NASA’S First Asteroid Deflection Mission Enters Next Design Phase describes a test the kinetic impactor technique that could someday be used to adjust the orbit of an asteroid in ...
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