![Copernical Team](/components/com_k2/images/placeholder/user.png)
Copernical Team
Perseverance has a pet rock
![](/plugins/content/jlexcomment/assets/icon.png)
![Mars Perseverance Sol 343 - Front Left Hazard Avoidance Camera: A rock in the front left wheel of Perseverance on Sol 343, image was acquired on Feb. 6, 2022 (Sol 343). Credit: NASA/JPL-Caltech Perseverance has a pet rock](https://scx1.b-cdn.net/csz/news/800a/2022/perseverance-has-a-pet.jpg)
How do you choose a rock on Mars? Sometimes you don't—it chooses you.
For the past four months, Perseverance has had an unexpected traveling companion. Back on sol 341—that's over 100 sols ago, in early February—a rock found its way into the rover's front left wheel, and since hitching a ride, it's been transported more than 5.3 miles (8.5 km). This rock isn't doing any damage to the wheel, but throughout its (no doubt bumpy!) journey, it has clung on and made periodic appearances in our left Hazcam images.
This is not the first time a rock has hitched a ride on a Mars rover mission.
Comet Interceptor approved for construction
![](/plugins/content/jlexcomment/assets/icon.png)
![Comet Interceptor concept](https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2019/06/comet_interceptor_concept/19447321-1-eng-GB/Comet_Interceptor_concept_card_full.jpg)
ESA’s Comet Interceptor mission to visit a pristine comet or other interstellar object just starting its journey into the inner Solar System has been ‘adopted’ this week; the study phase is complete and, following selection of the spacecraft prime contractor, work will soon begin to build the mission.
Charting sea level from space
![](/plugins/content/jlexcomment/assets/icon.png)
![](https://www.esa.int/var/esa/storage/images/esa_multimedia/videos/2022/05/charting_sea_level_from_space/24090637-1-eng-GB/Charting_sea_level_from_space_card_full.jpg)
Satellite images of our planet have become essential to our survival, offering a new outlook of our world. With rising seas being one of the biggest threats to society, satellite altimeter missions such as Copernicus Sentinel-6 are essential in monitoring global and regional changes in sea level.
Unbeknown to many, the island of Crete, Greece, plays an important role in the Copernicus satellite altimetry constellation and on an international stage. Satellite altimetry data have to be continuously monitored at the ESA’s Permanent Facility for Altimetry Calibration where different techniques have pioneered the use of transponders to provide the
Hubble captures largest near-infrared image to find universe's rarest galaxies
![](/plugins/content/jlexcomment/assets/icon.png)
![](https://www.spxdaily.com/images-bg/galaxies-10-billion-years-3d-dash-program-bg.jpg)
Researchers create simulations studying the lifecycle of ancestor galaxy cities
![](/plugins/content/jlexcomment/assets/icon.png)
![](https://www.spxdaily.com/images-bg/kavli-lifecycle-ancestor-galaxy-cities-bg.jpg)
Cosmological gravitational waves: A new approach to reach back to the Big Bang
![](/plugins/content/jlexcomment/assets/icon.png)
![](https://www.spxdaily.com/images-bg/polarbear-observatory-cosmological-gravitational-waves-bg.jpg)
Balmy Days on Mars - Sol 3496
![](/plugins/content/jlexcomment/assets/icon.png)
![](https://www.spxdaily.com/images-bg/curiosity-mars-lab-gale-crater-eboropu-serra-mara-stratigraphy-sol-3495-bg.jpg)
Why does the Moon look close some nights and far away on other nights?
![](/plugins/content/jlexcomment/assets/icon.png)
![](https://www.spxdaily.com/images-bg/moon-lunar-eclipse-marker-bg.jpg)
A mathematical tool to help understand fractal structure of quark-gluon plasma
![](/plugins/content/jlexcomment/assets/icon.png)
![](https://www.spxdaily.com/images-bg/quark-gluon-plasma-after-collision-two-heavy-nuclei-bg.jpg)
SCOUT and LEOcloud collaborate on next gen space domain awareness services
![](/plugins/content/jlexcomment/assets/icon.png)
![](https://www.spxdaily.com/images-bg/scout-leocloud-collaborate-bg.jpg)