Pic of the Week: The Launch of Hera

Posted on by onespaceman2000
Image (Credit): Visitors at ESA’s control center in Germany watching the Hera launch. (ESA / J.Mai)

This week’s image shows a crowd in Germany watching the launch of the European Space Agency’s (ESA) Hera mission on October 7, 2024. The launch itself took place from Cape Canaveral Space Force Station in Florida via a SpaceX Falcon 9.

Hera’s goal is to study how binary asteroid systems like Didymos form and function to learn more about to defend the Earth from approaching asteroids. You may remember Didymos from the earlier NASA Double Asteroid Redirection Test (DART) mission.

Here is more from the ESA on the mission:

Hera’s first deep space manoeuvre will begin in late October and put the spacecraft on course for its next major milestone, a flyby of Mars in March 2025. During this flyby, Hera will use its instruments to study Deimos, the smaller and more enigmatic of Mars’s two moons. This will serve as an important test for many of the spacecraft’s instruments, ensuring they are fully operational before the spacecraft arrives at its final destination, Didymos.

Hera will perform a second deep space manoeuvre in February 2026. An ‘impulsive rendezvous’ in October 2026 will bring Hera into the vicinity of the Didymos asteroid system. The spacecraft will begin its detailed survey of the moonlet Dimorphos in 2027, which will turn the 151 m asteroid into one of the most studied objects in the Solar System.

Pic of the Week: Spacewalk Outside the Chinese Space Station

Posted on by onespaceman2000
Image (Credit): Extravehicular activity on China’s Tiangong space station this past July. (CMSA)

This week’s image is from the China Manned Space Agency (CMSA). It shows taikonaut Li Cong on a spacewalk outside China’s Tiangong station on July 3, 2024. 

The space station was first launched in April 2021 and has been permanently crewed since June 2022. The current crew, called Shenzhou 18, consists of Commander Ye Guangfu, Operator Li Cong, and System Operator Li Guangsu.

Pic of the Week: Peeking into Perseus

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Image (Credit): The star-forming cluster NGC 1333 as seen by the JWST. (ESA/Webb, NASA & CSA, A. Scholz, K. Muzic, A. Langeveld, R. Jayawardhana)

This week’s image of a distant nebula with new stars was captured by the James Webb Space Telescope (JWST). The nebula, NGC 1333, is located in the Perseus molecular cloud, which is about 960 light-years away.

Here is more information on the image from the European Space Agency:

The centre of the image presents a deep peek into the heart of the NGC 1333 cloud. Across the image we see large patches of orange, which represent gas glowing in the infrared. These so-called Herbig-Haro objects form when ionised material ejected from young stars collides with the surrounding cloud. They are hallmarks of a very active site of star formation.

Many of the young stars in this image are surrounded by discs of gas and dust, which may eventually produce planetary systems. On the right hand side of the image, we can glimpse the shadow of one of these discs oriented edge-on — two dark cones emanating from opposite sides, seen against a bright background.

Similarly to the young stars in this mosaic, our own Sun and planets formed inside a dusty molecular cloud, 4.6 billion years ago. Our Sun didn’t form in isolation but as part of a cluster, which was perhaps even more massive than NGC 1333. The cluster in the mosaic, only 1–3 million years old, presents us with an opportunity to study stars like our Sun, as well as brown dwarfs and free-floating planets, in their nascent stages.

Pic of the Week: Galactic Emoji

Posted on by onespaceman2000
Image (Credit): A composite image of Arp 107.(NASA, ESA, CSA, STScI)

This week’s image comes from the James Webb Space Telescope. It shows two colliding galaxies creating a unique image from the telescope’s viewpoint.

Here is more information about the image from NASA:

Smile for the camera! An interaction between an elliptical galaxy and a spiral galaxy, collectively known as Arp 107, seems to have given the spiral a happier outlook thanks to the two bright “eyes” and the wide semicircular “smile.” The region has been observed before in infrared by NASA’s Spitzer Space Telescope in 2005, however NASA’s James Webb Space Telescope displays it in much higher resolution. This image is a composite, combining observations from Webb’s MIRI (Mid-Infrared Instrument) and NIRCam (Near-Infrared Camera)...Webb has captured these galaxies in the process of merging, which will take hundreds of millions of years. As the two galaxies rebuild after the chaos of their collision, Arp 107 may lose its smile, but it will inevitably turn into something just as interesting for future astronomers to study. Arp 107 is located 465 million light-years from Earth in the constellation Leo Minor.

Pic of the Week: The First Commercial Spacewalk

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Image (Credit): SpaceX Polaris Dawn crew conducts first private spacewalk. (SpaceX/Polaris)

This week’s image shows the first commercial spacewalk as part of the Polaris Dawn mission launched into space earlier this week by SpaceX. All four crew members were exposed to space as part of the process earlier today, but only two exited the spacecraft. The spacecraft was between 118 to 435 miles above the Earth during the spacewalks.

NASA Administrator Bill Nelson posted this comment to Twitter/X:

Congratulations @PolarisProgram and @SpaceX on the first commercial spacewalk in history!

Today’s success represents a giant leap forward for the commercial space industry and @NASA ‘s long-term goal to build a vibrant U.S. space economy.