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Nasa mission lines up to 'touch the Sun' (www.bbc.com)
submitted 10 months ago by Stamau123@lemmy.world to c/news@lemmy.world
14 comments fedilink hide all child comments

It promises to be a remarkable moment in the history of space exploration.

A year from now, on 24 December, Nasa's Parker Solar Probe will race past the Sun at the astonishing speed of 195 km/s, or 435,000 mph.

No human-made object will have moved so fast nor, indeed, got so close to our star - just 6.1 million km, or 3.8 million miles from the Sun's "surface".

"We are basically almost landing on a star," said Parker project scientist Dr Nour Raouafi.

"This will be a monumental achievement for all humanity. This is equivalent to the Moon landing of 1969," the Johns Hopkins University Applied Physics Laboratory scientist told BBC News.

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[-] NucleusAdumbens@lemmy.world 49 points 10 months ago

This is really cool, but it feels kind of insulting to call this equivalent to landing people on the moon in 1969. To bring humans to the moon and back alive and healthy, with 1960s computer tech, seems a much more significant feat. Plus the huge risk that astronauts took, made very real by preceding and subsequent deaths and close-calls. Sounds like this will be an important accomplishment and undoubtedly technically difficult, and the speed record part is particularly cool. Howevert it's ultimately still an unmanned probe, which seems incomparable to a manned mission imo.

[-] themeatbridge@lemmy.world 16 points 10 months ago

I am not a smart man, but 6.1 million km seems like really far away from something.

[-] Heggico@lemmy.world 32 points 10 months ago

The sun is 1.4 million kilometers in diameter. 6 meter from a 1 meter diameter sphere is relatively close.

Also the sun's corona stretches out about 8 million kilometers from its surface, so for this probe its like its moving inside the earths atmosphere.

So.. pretty dang close.

[-] Scubus@sh.itjust.works 4 points 10 months ago

Tfw the suns atmosphere is significantly wider than our planet, several times over

[-] SnotFlickerman@lemmy.blahaj.zone 24 points 10 months ago

I am also not a smart man, but I'm surprised we can even get anything that close to the sun without all of it fucking melting.

[-] Scubus@sh.itjust.works 1 points 10 months ago

They put a mirror on the part that is in the suns light. Can't heat up if you reflect almost all the light that hits you.

[-] prole@sh.itjust.works 3 points 10 months ago

I saw Sunshine too. Weird ending.

[-] Scubus@sh.itjust.works 1 points 10 months ago

What's that?

[-] jettrscga@lemmy.world 12 points 10 months ago* (last edited 10 months ago)

For perspective because I didn't know either:

Mercury from sun: 49.93 million km

Earth from sun: 147.11 million km

Still sounds sensationalist to say it's like landing on the sun, but close on the solar system scale.

[-] LogicalDrivel@sopuli.xyz 0 points 10 months ago

I was curious so I asked GPT. Pretty interesting stuff

The solar corona is the outermost layer of the Sun's atmosphere. Its outer boundary is not well-defined, and its extent varies depending on solar activity. However, on average, the solar corona extends several solar radii above the Sun's surface. One solar radius is approximately 696,340 kilometers.

During a total solar eclipse, when the Moon completely blocks the Sun, the outer parts of the solar corona become visible to observers on Earth. At that time, the corona can be seen extending far beyond the Sun's visible disk. The temperature of the solar corona is much higher than the temperature of the Sun's surface, and the reason for this temperature difference is still a topic of scientific research.

While the solar corona is not a fixed distance from the Sun's surface, it typically extends millions of kilometers into space. The exact dimensions can vary depending on solar activity, such as the solar cycle and the presence of solar flares or coronal mass ejections.

[-] Potatisen@lemmy.world 13 points 10 months ago

That is fucking amazing!

I can't wait to see what kinda strange shit comes out of this research.

[-] runswithjedi@lemmy.world 3 points 10 months ago

[-] eagleeyedtiger@lemmy.nz 3 points 10 months ago

Kaneda, what can you see!?

[-] jwt@programming.dev 2 points 10 months ago

Nasa's Parker Solar Probe will race past the Sun ...

Wouldn't 'Icarus Solar Probe' sound way cooler? I mean, what could go wrong?

this post was submitted on 30 Dec 2023
112 points (98.3% liked)

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