ESA’s Euclid Space Telescope Safely Launched

Posted on by onespaceman2000
Credit: ESA

Earier today, the European Space Agency’s (ESA) Euclid Space Telescope was safely launched from Cape Canaveral on a Space X Falcon 9 rocket (though the original plan was to use a Russian Soyuz rocket until the invasion nixed that idea). The space telescope is destined for the Sun-Earth Lagrange point 2 (L2), which is an average distance of 1 million miles beyond Earth’s orbit. It will join the James Webb Space Telescope.

In addition to the 1.2 meter diameter telescope, the mission includes two scientific instruments: a visible-wavelength camera (the VISible instrument, VIS) and a near-infrared camera/spectrometer (the Near-Infrared Spectrometer and Photometer, NISP). 

The focus of the new space telescope will be to create a 3D map of the universe to better understand dark matter and dark energy. As noted on the ESA’s website, Euclid hopes to answer these questions:

  • What is the structure and history of the cosmic web?
  • What is the nature of dark matter?
  • How has the expansion of the Universe changed over time?
  • What is the nature of dark energy?
  • Is our understanding of gravity complete?

It is a tall order for this new telescope. Astronomer Isobel Hook from the UK’s Lancaster University put it this way to BBC News:

It will be like setting off on a ship before people knew where land was in different directions. We’ll be mapping out the Universe to try to understand where we fit into it and how we’ve got here – how the whole Universe got from the point of the Big Bang to the beautiful galaxies we see around us, the Solar System and to life.

Space Stories: Launch of the Euclid Space Telescope, Mercury Flyby, and a Super Hot Brown Dwarf

Posted on by onespaceman2000
Image (Credit): Artist’s rendering of the ESA’s Euclid Space Telescope. (ESA, CC BY-SA 3.0 IGO)

Here are some recent stories of interest.

—NASA/JPL: “NASA to Provide Coverage for Launch of ESA ‘Dark Universe’ Mission“

The ESA (European Space Agency) and SpaceX are targeting no earlier than 11:11 a.m. EDT (8:11 a.m. PDT) Saturday, July 1, to launch the Euclid spacecraft. Euclid is an ESA mission with contributions from NASA that will shed light on the nature of dark matter and dark energy, two of the biggest modern mysteries about the universe.

—Sky&Telescope: “BepiColombo Mission Makes Third Mercury Flyby“

An intrepid space mission had another brief glimpse of its final destination this week, as the European Space Agency’s BepiColombo flew past Mercury for a third time. The team confirms that the spacecraft is in good health post flyby, and that all instruments performed as planned. “Everything went very smoothly with the flyby and the images from the monitoring cameras taken during the close-approach phase of the flyby have been transmitted to the ground,” said Ignacio Clerigo (ESA) in a recent press release. “While the next Mercury flyby isn’t until September 2024, there are still challenges to tackle in the intervening time.”

—Phys.org: “Discovery of a Brown Dwarf Hotter than the Sun“

An international team of astronomers has discovered a planet-like object that is hotter than the sun. Their report has been accepted for publication in the journal Nature Astronomy and is currently available on the arXiv pre-print server. Brown dwarfs are sometimes called failed stars and do not qualify for the category of either a planet or a star. In this new effort, the researchers have identified one that orbits a star so closely that its temperature is hotter than our sun.

$10 Billion for Some Martian Rocks?

Posted on by onespaceman2000
Image (Credit): Hole left by the Perserverance rover as it collected its 14th sample of Martian rock. (NASA)

A recent ARS Technica article, “NASA’s Mars Sample Return Has a New Price Tag—and it’s Colossal,” discusses the potential plans to retrieve rocks from the Martian surface at a total cost of $10 billion. This has the potential to crowd out other important NASA projects and may need to be reconsidered at a time of budget constraints.

NASA has been seeking innovative solutions from the private sector to lower the retrieval costs, but the mission may be on hold for some time. Getting rocks from the Moon and even an asteroid seems easy by comparison.

Maybe NASA needs to seen another private sector solution – a study of Martian rocks on the surface of Mars. It may be easier to land a laboratory and conduct long-term experiments in situ rather than attempting a journey back to Earth. It is something to consider for now and may give us quicker access to the rocks.

Of course, we can always wait until Elon Musk lands on the Red Planet and retrieves them.

Pic of the Week: The Ongoing Perseverance Rover Mission

Posted on by onespaceman2000
Image (Credit): NASA’s Perseverance Mars rover captured this mosaic of a hill nicknamed “Pinestand.”
(NASA/JPL-Caltech/ASU/MSSS)

This week’s image comes from NASA’s Mars rover Perseverance as it explores the to Jezero Crater. The photo was posted last month. It has been a little while since we directly our attention at the Red Planet.

The image shows what may be the result of a fast-moving river some time in the past. In the NASA write-up accompanying the photo above, we read:

“Pinestand” is an isolated hill bearing sedimentary layers that curve skyward, some as high as 66 feet (20 meters). Scientists think these tall layers may also have been formed by a powerful river, although they’re exploring other explanations, as well.

“These layers are anomalously tall for rivers on Earth,” [postdoctoral researcher at NASA’s Jet Propulsion Laboratory in Southern California Libby] Ives said. “But at the same time, the most common way to create these kinds of landforms would be a river.”

Pic of the Week: New Crew Sent to the Tiangong Space Station

Posted on by onespaceman2000
Image (Credit): Launch of China’s Shenzhou 16 spacecraft. (AP)

This week’s image shows China’s launch of the Shenzhou 16 spacecraft earlier this week atop a Long March 2-F rocket. The launch included a three-man crew, one being the first civilian astronaut in the Chinese crew rotation, who will relieve the current crew on the Tiangong Space Station.