Arecibo Observatory Gone Forever

Posted on by onespaceman2000
Image (Credit): Matthew McConaughey and Jodie Foster at the Arecibo Observatory in the movie Contact. (Warner Bros.)

If you were hoping that the Arecibo Observatory in Puerto Rico would have a second life, it may be time to say goodbye. Efforts to rebuild the radio telescope since it collapsed in 2020 have ended. Nature reports that the US National Science Foundation (NSF) has given up on the idea of rebuilding the telescope and instead plans to establish an educational center at the site.

You may have memories from the 1997 film Contact where Matthew McConaughey and Jodie Foster enjoyed some private time at the Observatory. Her character Dr. Ellie Arroway was working at the Observatory as part of the Search for Extraterrestrial Intelligence works (SETI) program. In fact, the SETI connection is true. You can see a SETI tribute to the telescope here.

Of course, scientists will remember almost 60 years of work with the radio telescope. While it was initially built for military purposes, it was soon transformed into a scientific site and served as the largest radio telescope on the planet for some time. As far as scientific accomplishments, here are a few of them from the NSF:

  • 1967: Arecibo discovered that the rotation rate of Mercury is 59 days, not the previously estimated 88 days.
  • 1981: Arecibo produced the first radar maps of the surface of Venus.
  • 1992: Arecibo discovered the first ever exoplanet: In subsequent observations, an entire planetary system was found around the pulsar PSR 1257+12.
  • 2008: Astronomers use Arecibo to detect for the first time, methanimine and hydrogen cyanide molecules — two organic molecules that are key ingredients in forming amino acids — in a galaxy 250 million light-years away.

So many new telescopes have come online in the past 60 years that some will say we will be fine with an educational center. This is true, but it is also worth remembering each of the telescopes along the way that helped us to understand this awesome universe of ours.

Image (Credit): The damaged Arecibo Observatory reflector dish after suffering damage from a broken cable. (University of Central Florida)

Pic of the Week: Stellar Tantrum

Posted on by onespaceman2000
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. 

Space Stories: Venusian Balloons, Sun Observations, and a Private Moon Trip

Posted on by onespaceman2000
Image (Credit): Test of the one-third scale prototype aerobot designed to withstand the corrosive chemicals in Venus’ atmosphere. (Near Space Corporation)

Here are some recent stories of interest.

—NASA.gov: “JPL’s Venus Aerial Robotic Balloon Prototype Aces Test Flights“

A scaled-down version of the aerobot that could one day take to the Venusian skies successfully completed two Nevada test flights, marking a milestone for the project…The shimmering silver balloon ascended more than 4,000 feet (1 kilometer) over Nevada’s Black Rock Desert to a region of Earth’s atmosphere that approximates the temperature and density the aerobot would experience about 180,000 feet (55 kilometers) above Venus. Coordinated by Near Space, these tests represent a milestone in proving the concept’s suitability for accessing a region of Venus’ atmosphere too low for orbiters to reach, but where a balloon mission could operate for weeks or even months.

—SkyandTelescope.org: “‘Chinese Observatory Will Study Violent Events on the Sun“

China has launched a solar observatory to study solar flares and eruptions, and their connection with the Sun’s magnetic field…[the Advanced Space-based Solar Observatory (ASO-S)] is planned to operate at 720 kilometers (447 miles) above Earth’s surface in a Sun-synchronous orbit that will allow it to observe the Sun at all times. Its primary, four-year mission is timed to make the most of the 2024–2025 solar maximum, when the Sun is at its most active during its 11-year cycle.

—Space.com: “‘SpaceX Says its 2nd Private Starship Trip Around the Moon will Help Make Humanity Multiplanetary“

SpaceX’s newly announced tourist mission to the moon could help humanity extend its footprint far beyond Earth, company representatives say. That mission, which was revealed today (Oct. 12), will send wealthy entrepreneur Dennis Tito, his wife Akiko and 10 other people on a weeklong journey around the moon aboard SpaceX’s huge Starship vehicle, which is still in development. Who those 10 other passengers will be is unknown; only the Titos have reserved seats at the moment.

NASA Confirms Success of DART Mission

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Image (Credit): The image above was taken on October 8, 2022 by NASA’s Hubble Space Telescope. It shows the debris blasted from the surface of Dimorphos 285 hours after the asteroid was intentionally hit by NASA’s DART spacecraft on September 26th. NASA stated that the shape of that tail has changed over time. ( NASA/ESA/STScI/Hubble)

NASA has saved the Earth, or it would have had the asteroid Dimorphos and its partner been heading towards us. That is the news from earlier today from the space agency. NASA’s Administrator Bill Nelson made the following comments regarding the results of the impact by the Double Asteroid Redirection Test (DART) spacecraft:

This mission shows that NASA is trying to be ready for whatever the universe throws at us. NASA has proven we are serious as a defender of the planet. This is a watershed moment for planetary defense and all of humanity, demonstrating commitment from NASA’s exceptional team and partners from around the world.

NASA scientists determined that the orbit of Dimorphos around its parent asteroid, Didymos, was truncated by 32 minutes as a result of the impact. Since minimum success would have been 1 minute 13 seconds, DART was a great success.

Hollywood may prefer a more dramatic method with oil rig astronauts and nuclear bombs, but sometimes a simple nudge will do the job.

Credit: Touchstone Pictures

Starlink Having Problems in Ukraine

Posted on by onespaceman2000
Image (Credit): Starlink page explaining why Starlink satellites are better then geostationary satellites. (SpaceX)

As if Elon Musk doesn’t have enough problems with his Twitter purchase and declining shares at Tesla, now the Ukranians are reporting that SpaceX’s Starlink internet service failed to work during a critical point in their battle to push the Russians out of Ukranian territory. This problem has been going on for weeks, but we are hearing about it now.

SpaceX was silent when these reports came out, but some suggested this may have been a feature rather than a bug in the Starlink system to prevent it from being used by Russians.

Mr. Musk later tweeted on this matter, stating:

Bad reporting by [The Financial Times]. This article falsely claims that Starlink terminals & service were paid for, when only a small percentage have been. This operation has cost SpaceX $80M & will exceed $100M by end of year. As for what’s happening on the battlefield, that’s classified.

Sadly, Mr. Musk did not clear the air but rather boasted about his company and attacked the media. But another media story from The Eurasian Times shed more light on the issue. The newspaper reports that Russia may be using its Tirada-2S satellite communications electronic jamming system to interrupt Starlink signals.

I would rather SpaceX is the cause of the problem rather than the Russians, but whatever it is we can only hope the Ukrainians, SpaceX, and Ukraine’s allies have a quick fix. Mr. Musk should received accolades for adding a novel asset to this war, yet his entire Starlink enterprise, and not just his donated equipment, is now at risk.

Update: Elon Musk is now asking the Pentagon to assume the costs of the Ukrainian Starlink program, expected to cost SpaceX about $100 million by the end of the year. Given the ongoing Twitter battle between Elon Musk and the Ukrainians related to Mr. Musk’s proposed peace plan for the region, the Ukrainians should probably be looking for another funding partner rather than continuing to count on the generosity of Mr. Musk.

Further Update: Elon Musk is now backing off on his attempts to seek more funding for Starlink, but as usual he is not very graceful about it. Here is his recent tweet:

The hell with it … even though Starlink is still losing money & other companies are getting billions of taxpayer $, we’ll just keep funding Ukraine govt for free.

Such drama from the wealthiest man in the world.