NASA Astronomy Picture of the Day 2016 October 1
After closely following comet 67P/Churyumov-Gerasimenko for 786 days as it rounded the Sun, the Rosetta spacecraft’s controlled impact with the comet’s surface was confirmed by the loss of signal from the spacecraft on September 30, 2016. One of the images taken during its final descent, this high resolution view looks across the comet’s stark landscape. The scene spans just over 600 meters (2,000 feet), captured when Rosetta was about 16 kilometers from the comet’s surface. Rosetta’s descent to the comet brought to an end the operational phase of an inspirational mission of space exploration. Rosetta deployed a lander to the surface of one of the Solar System’s most primordial worlds and witnessed first hand how a comet changes when subject to the increasing intensity of the Sun’s radiation. The decision to end the mission on the surface is a result of the comet’s orbit now taking it to the dim reaches beyond Jupiter where there would be a lack of power to operate the spacecraft. Mission operators also faced an approaching period where the Sun would be close to line-of-sight between Earth and Rosetta, making radio communications increasingly difficult.
This a personal blog for the things I encounter on the daily. I’ll probably be posting the things that interest me most ranging from space, coffee, technology, and the occasional cute thing. (Hint: cats!)
Happy perusing! :)
The Jason-3 launch was successful.
The landing attempt on the droneship, however, didn’t go perfectly. The rocket booster is “on target at droneship” but SpaceX has said that a landing leg was broken due to a hard landing. I don’t know exactly what this means for the booster quite yet. I’ll update when I find out.
yes.
"Hold up, Houston, let me take a selfie."
Buzz Aldrins self-portrait during Gemini 12 with the Earth reflecting off his visor, 12 November 1966
js
Have you found it weird that the earth’s axis is tilted by 23.5 degrees and wondered what led to this? Wait, Where did the moon come from?
Well, Here’s what scientists have theorized.
Theia, a mars sized planet collided ( it glanced and thankfully did not collide head on, else it would have destroyed earth ) with the Earth around 4.553 billion years ago.
Theia’s debris gathered together around Earth to form what we now call- The Moon.
The collision between the early earth and Theia was so immense that it tilted the axis of rotation of the early earth by 23.5 degrees.
And it remains tilted so that way even today!!
Scientists have a very good reason to believe in the Giant Impact Hypothesis:
Earth’s spin and the Moon’s orbit have similar orientations.
Moon samples indicate that the Moon once had a molten surface.
The Moon has a relatively small iron core.
The Moon has a lower density than Earth.
Evidence exists of similar collisions in other star systems (that result in debris disks).
Giant collisions are consistent with the leading theories of the formation of the solar system.
The stable-isotope ratios of lunar and terrestrial rock are identical, implying a common origin
Have a good day !
PC: sarice,
I need some space cakes in my life.
Galaxy based food
Hello, folks! I mainly like to post things of the space, cartoons, and caffiene variety. Enjoy your stay! :)
37 posts