Image (Source): View of the Pacific from the ISS. More information provided below. (NASA)
This week’s image is from the International Space Station (ISS). It shows an October 1, 2022 photo of European Space Agency (ESA) astronaut Samantha Cristoforetti enjoying a view of the Pacific Ocean off the coast of Peru. She is sitting in the ISS’s so called “window to the world.” You can learn more about photo’s taken from this window via this short NASA video.
Image (Credit): Artist’s drawing of the Euclid space telescope. (ESA/ATG-medialab)
To follow up on the previous post, Russia also lost out on launching the European Space Agency’s (ESA) Euclid spacecraft. Russia was supposed to launch it on a Soyuz-ST/Fregat rocket this December, but the country’s invasion of Ukraine led to a change in plans. SpaceX will now be launching the spacecraft next year.
Euclid was designed to study dark energy and dark matter, and make a 3D-map of the Universe. The project includes scientists from 14 countries: Austria, Denmark, France, Finland, Germany, Italy, Netherlands, Norway, Spain, Switzerland, Portugal, Romania, the UK, and the US.
Euclid hopes to answer the following questions:
How did the Universe originate? What were the conditions just after the Big Bang, and how did these give rise to the large-scale structures we see today?
Why is the Universe expanding at an accelerating rate today?
Is dark energy – a term often used to signify the mysterious force behind this cosmic acceleration – real? If so, is it a constant energy density intrinsic to and spread throughout space, or a new force of nature that slowly evolves as the Universe expands?
What is the nature of dark matter, and how do neutrinos possibly contribute? Are there other as-yet-undetected massive particles in the Universe?
Once launched, Euclid will operate in the Sun-Earth Lagrange point 2 (L2), which is where the James Webb Space Telescope is located as well as ESA’s Gaia spacecraft. Gaia, launched in December 2013, is currently mapping the stars in the Milky Way galaxy. It seems L2 is the place to be.
NASA is contributing infrared flight detectors for one of Euclid’s two science instruments. You can read more about the NASA contribution here.
Image (Credit): Russia’s Progress 76 resupply ship approaching the ISS in July 2020. (NASA)
Marina Koren’s article in TheAtlantic, titled “The Russian Space Program Is Falling Back to Earth,” has plenty to say about the state of Russia’s space program. Her assessment is pretty bleak outside of the continued collaboration related to the International Space Station (ISS).
She notes:
Beyond the ISS, though, Russia’s space portfolio isn’t all that grandiose these days. Although cosmonauts fly into orbit regularly, Russia does not have a rover on the far side of the moon, as China has, or orbiters around Mars, as India and the United Arab Emirates have. It does not have a fleet of space telescopes like the U.S has. The Soviet Union was the first to send a human being to space, decades ago, and its early accomplishments are a distinct point of national pride. But the Russian space program has stalled for years, plagued by sparse budgets. And that was before Vladimir Putin’s onslaught on Ukraine: Some of the space plans the country still had in the works are falling apart. Now the Russian space effort may be more adrift than ever.
The Russian invasion of Ukraine may be the last straw. It led to the cancellation of various collaborative space projects with other nations. For instance, back in March the European Space Agency (ESA) was forced to suspend its joint ESA/Roscosmos ExoMars Rover mission to Mars.
China seems to be pulling ahead of Russia in the space race, with Russia taking a back seat on future projects, such as a Moon base or new space station. On the ground, Russia has shown it is not up to a war with Ukraine, making its role as a military power questionable. The article notes that Russia’s status as a space power is now also in question.
And shooting down another nation’s satellites will not be seen as a sign of strength in either the military or space arena.
Image (Credit): Hubble image of an outburst from an infant star. (ESA/Hubble & NASA, B. Nisini)
This week’s image is from the NASA/ESA Hubble Space Telescope. While it may look like an enormous interstellar stingray, it actually shows gas streaming from a newly-formed star. Here is the story from the European Space Agency (ESA):
An energetic outburst from an infant star streaks across this image from the NASA/ESA Hubble Space Telescope. This stellar tantrum – produced by an extremely young star in the earliest phase of formation – consists of an incandescent jet of gas travelling at supersonic speeds. As the jet collides with material surrounding the still-forming star, the shock heats this material and causes it to glow. The result is the colorfully wispy structures, which astronomers refer to as Herbig–Haro objects, billowing across the lower right of this image.
Herbig–Haro objects are seen to evolve and change significantly over just a few years. This particular object, called HH34, was previously captured by Hubble between 1994 and 2007, and again in glorious detail in 2015. HH34 resides approximately 1,250 light-years from Earth in the Orion Nebula, a large region of star formation visible to the unaided eye. The Orion Nebula is one of the closest sites of widespread star formation to Earth, and as such has been pored over by astronomers in search of insights into how stars and planetary systems are born.
Image (Credit): The Hubble Space Telescope orbiting Earth. (Hubblesite.org)
The Washington Postreports that NASA and SpaceX are looking into the idea of extending the life of the NASA/ESA Hubble Space Telescope, which has already been in service more than 30 years. The space telescope’s orbit has been deteriorating since 2009, when it was last visited for repairs. The current orbit should be okay until the mid-2030s, and then it will fall to Earth.
To keep the Hubble in service for even more years, it would need to be pushed into a higher orbit. This is where SpaceX comes in. It can assist NASA by moving Hubble just 40 miles higher in order to get another 15 to 20 years out of the space telescope.
The article notes that the James Webb Space Telescope (JWST) was not developed to replace Hubble but rather to complement it. Hence, the extra life for Hubble means more and better astronomical observations over additional years in conjunction with the JWST. For instance, we will get more shots like the one below where the Hubble captured the Double Asteroid Redirection Test (DART) mission before and after it struck the asteroid.
Update: I have also included the JWST DART image below just to show the two space telescopes can work in tandem.
Image (Credit): This animated GIF combines three of the images NASA’s Hubble Space Telescope captured after NASA’s DART spacecraft intentionally impacted Dimorphos, a moonlet asteroid in the double asteroid system of Didymos. The animation spans from 22 minutes after impact to 8.2 hours after the collision took place. As a result of the impact, the brightness of the Didymos-Dimorphos system increased by 3 times. The brightness also appears to hold fairly steady, even eight hours after impact. (NASA, ESA, Jian-Yang Li (PSI); animation: Alyssa Pagan (STScI))
Image (Credit): This animation gif is a timelapse of images from NASA’s JWST. It covers the time spanning just before impact at 7:14 p.m. EDT, Sept. 26, through 5 hours post-impact. Plumes of material from a compact core appear as wisps streaming away from where the impact took place. An area of rapid, extreme brightening is also visible in the animation. (NASA, ESA, CSA, Cristina Thomas (Northern Arizona University), Ian Wong (NASA-GSFC); Joseph DePasquale (STScI))