Category: space

North polar dunes on Mars

Credits: ESA/Roscosmos/CaSSIS, CC BY-SA 3.0 IGO

Dunes come in various characteristic shapes on Mars just as on Earth, providing clues about the prevailing wind direction. Monitoring them over time also gives us a natural laboratory to study how dunes evolve, and how sediments in general are transported around the planet.

teded:

On this day in 1961, Soviet cosmonaut Yuri Alekseyevich Gagarin became the first human being to travel into space.

Happy International Day of Human Space Flight!

From the TED-Ed Lesson Could we survive prolonged space travel? – Lisa Nip

Animation by Bassam Kurdali

teded:

On this day in 1961, Soviet cosmonaut Yuri Alekseyevich Gagarin became the first human being to travel into space.

Happy International Day of Human Space Flight!

From the TED-Ed Lesson Could we survive prolonged space travel? – Lisa Nip

Animation by Bassam Kurdali

M87 Black Hole Size Comparison

xkcd

Alt/title text:

“I think Voyager 1 would be just past the event horizon, but slightly less than halfway to the bright ring.”

More:

– Explain xkcd

– Focus on the First Event Horizon Telescope Results – The Astrophysical Journal Letters – IOPscience

– NASA news: Black Hole Image Makes History; NASA Telescopes Coordinated Observations

NSF Media resources

– Event Horizon Telescope (Official website)

Hayabusa2 hovering above asteroid Ryugu in October.

Credit: JAXA

Via

Nature: Japanese space probe drops explosive on asteroid Ryugu

Robotic bees are joining the International Space Station

Via Tech Xplore

Astrobee is “a compact one-foot-cube of a robot in development at NASA’s Ames Research Center in Silicon Valley. This robot is designed to work autonomously without astronaut supervision, or to be remotely operated by mission controllers.

Now you can name 5 Jupiter moons (from the dozen newly discovered) by tweeting your suggested moon name to @JupiterLunacy and including the hashtag #NameJupitersMoons between today and April 15, 2019.

Of course there are some rules, being the main one that Jupiter moons must be named after characters from Roman or Greek mythology who were either descendants or lovers of the god known as Jupiter (Roman) or Zeus (Greeks). More info in the Carnegie Institution for Science website:

teded:

Today is Red Planet Day! Red Planet Day is celebrated on November 28th of each year to commemorate the first launch of Mariner 4, the first spacecraft to obtain and transmit close range images of Mars. Here’s a fun Mars fact for you to celebrate:

Valles Marineris is the largest canyon in the Solar System. It’s so wide that from one side, the opposite rim would be below the curve of the horizon. From here, you’ll catch some spectacular blue sunsets in the normally red sky, which gets its color from the dust absorbing most of the blue light and the way sunlight is scattered by the atmosphere.

From the TED-Ed Lesson Could we actually live on Mars? – Mari Foroutan

Animation by Nick Hilditch

First picture from the NASA’s Insight from its new home in Mars through the Instrument Deployment Camera (IDC).

Credits: NASA/JPL-Caltech

Via NASA: InSight Is Catching Rays on Mars

Caption:

The Instrument Deployment Camera (IDC), located on the robotic arm of NASA’s InSight lander, took this picture of the Martian surface on Nov. 26, 2018, the same day the spacecraft touched down on the Red Planet. The camera’s transparent dust cover is still on in this image, to prevent particulates kicked up during landing from settling on the camera’s lens. This image was relayed from InSight to Earth via NASA’s Odyssey spacecraft, currently orbiting Mars.

teded:

On May 20, 1990, the Hubble Space Telescope sent its first image back to Earth. 

Since then, the Hubble has continued to wow us with wondrous images that, if nothing more, make us feel so small…

…and inspire us to dream so so big!

We’re excited to celebrate the Hubble with these stunning images from our  TED-Ed Lesson How small are we in the scale of the universe? – Alex Hofeldt

Animation by Yukai Du

Happy Birthday to Edwin Hubble, the astronomer that the Hubble Telescope was named after!