Tag: astronomy

Hawaii Supreme Court hears arguments on TMT constructions

8:15 am

Hawaii’s Supreme Court on Thursday heard arguments for and against the construction of the Thirty Meter Telescope on the summit of Mauna Kea.

Based on reading the various news reports of the hearing and the questioning by the judges, it appears to me that the judges have already decided against the telescope. Race, ethnicity, and hatred of western technology must take precedent over all else.

I repeat: If the court shuts down TMT astronomers should consider moving out entirely. Furthermore, Americans should maybe consider other places for their tourism, considering how hostile Hawaiians now appear to be.

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IAU balks at some Pluto names picked by New Horizons team

9:12 am

Irritated that the New Horizons team did not consult with the International Astronomical Union (IAU) before it announced its proposed names for many Pluto features, IAU officials are now threatening to reject them once submitted.

“Frankly, we would have preferred that the New Horizons team had approached us before putting all these informal names everywhere,” said Rosaly Lopes, a senior research scientist at NASA’s Jet Propulsion Laboratory who is a member of the IAU’s Working Group for Planetary System Nomenclature.

The group’s chair, Rita Schulz of the European Space Agency, said the New Horizons team has not yet submitted a formal proposal for naming features on Pluto and its moons. “Usually, there are always some features for which this process goes rather fast, some for which more checks and balances are required (which then takes a bit longer) and there are usually also some names or descriptors that cannot be approved and need to be replaced by others,” she told GeekWire in an email.

There has been a conflict between the IAU and the principal investigator for New Horizons, Alan Stern, for years now. Stern also runs the private company Uwingu, which offers citizens the ability to name unnamed craters on Mars for a fee, without asking the IAU. Stern, like myself, believes that the IAU’s claim that it is the only authority that can approve names for every object not on Earth is hogwash. Stern also strongly objects to the IAU’s decision to demote Pluto’s planetary status to a dwarf planet.

These comments by IAU officials suggest that they are being somewhat petty and are threatening to reject the New Horizons names to get back at Stern.

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New Hubble image of Twin Jet Nebula

8:27 am

Twin Jet Nebula

Astronomers using the Hubble Space Telescope have taken a new image of the Twin Jet Nebula, a planetary nebula officially called PM M2-9.

The M in this name refers to Rudolph Minkowski, a German-American astronomer who discovered the nebula in 1947. The PN, meanwhile, refers to the fact that M2-9 is a planetary nebula. The glowing and expanding shells of gas clearly visible in this image represent the final stages of life for an old star of low to intermediate mass. The star has not only ejected its outer layers, but the exposed remnant core is now illuminating these layers — resulting in a spectacular light show like the one seen here. However, the Twin Jet Nebula is not just any planetary nebula, it is a bipolar nebula.

The bipolar nature of the nebula is thought to be caused by the interaction of a binary star system. I like to say that the orbiting stars act like the blades in a blender, mixing the ejected layers of material to produce the jets and shapes that make planetary nebula so beautiful.

Hubble first imaged this nebula in 1997. This image, using the telescope’s newer instruments, is important because it shows the complex layers within each jet, suggesting multiple ejection events in the past.

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An update on Gaia’s first year of astronomical observations

11:43 pm

European scientists today released an update on the status and scientific observations of their space telescope Gaia, designed to survey the location and distance of a billion stars.

The press release provides a basic summary of the spacecraft’s condition, which appears good, as well as an overview of some of the most interesting observations, though with little detail. This is because the first scheduled release of Gaia hard data will not happen until a year from now, thus giving the scientists who run the project a year to analyze it and publish their own papers.

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Two years from today a total eclipse will cross the U.S.

4:04 pm

Start making your plans! The Great American solar eclipse will take place two years from today.

Aug. 21, 2017, will mark the first time this century, and the first time since 1979, that a total solar eclipse will cross the contiguous (lower 48) United States (Alaska had its turn in 1990; Hawaii in 1991). And for the very first time, the shadow track — better known as the “path of totality” — will sweep only over the United States and no other country, leading some people to refer to this upcoming event as “The Great American Eclipse.”

Many Americans taking full advantage of this event’s close proximity to their homes will have a golden opportunity to witness firsthand one of the most beautiful and most exciting of nature’s sky events. The total eclipse will be seen by an estimated 12 million people who fortuitously live within the totality path.  However, the number of people who are within just one day’s drive of the totality zone is probably around 200 million.

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Eight telescope protesters arrested on road to summit of Haleakala on Maui

9:16 am

Police arrested 8 protesters on Thursday attempting to block trucks delivering construction materials for the new Daniel K. Inouye Solar Telescope (DKIST) under construction since 2012 on the summit of Haleakala on the island of Maui in Hawaii.

One of those arrested has been a leader of the protests at Mauna Kea against the Thirty Meter Telescope.

The Hawaii state government continues to waffle on what it is going to do. Either they will make sure that construction of these telescopes can proceed, as per the agreements made after years of negotiation, or they are going to bow to a handful of protesters. Right now it appears that it can’t seem to make up its mind.

Meanwhile, if these protesters really have the support of a majority of Hawaiians, then astronomy in Hawaii is doomed.

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Astronomers photograph an exoplanet

2:14 pm

51 Eridani b

Cool image time! Astronomers have used the Gemini Telescope on Mauna Kea to take the clearest image yet of a Jupiter-sized gas giant orbiting another star 96 light years away.

Once the astronomers zeroed in on the star, they blocked its light and spotted 51 Eri b orbiting a little farther away from its parent star than Saturn does from the sun. The light from the planet is very faint — more than one million times fainter than its star – but GPI can see it clearly. Observations revealed that it is roughly twice the mass of Jupiter. Other directly imaged planets are five times the mass of Jupiter or more. In addition to being the lowest-mass planet ever imaged, it’s also the coldest — about 800 degrees Fahrenheit — and features the strongest atmospheric methane signal on record. Previous Jupiter-like exoplanets have shown only faint traces of methane, far different from the heavy methane atmospheres of the gas giants in our solar system.

All of these characteristics, the researchers say, point to a planet that is very much what models suggest Jupiter was like in its infancy.

The exoplanet is the bright spot near the bottom of the image.

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Astronomers chart the universe’s slow death

9:40 am

Using data gathered from more than 200,000 galaxies, astronomers have been able to measure the slow decline in the universe’s energy output since the Big Bang.

The fact that the Universe is slowly fading has been known since the late 1990s, but this work shows that it is happening across all wavelengths from the ultraviolet to the infrared, representing the most comprehensive assessment of the energy output of the nearby Universe. “The Universe will decline from here on in, sliding gently into old age. The Universe has basically sat down on the sofa, pulled up a blanket and is about to nod off for an eternal doze,” concludes Simon Driver.

I wish to note the significant uncertainty of this result. While this result is important and does strongly suggest that the universe is dying, 200,000 galaxies is hardly a significant representation of the universe’s galaxy population.

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Mauna Kea visitor center reopens

5:47 pm

The visitor center on Mauna Kea was reopened this weekend after a month closure that supposedly forbid access by the public.

And yet, for that entire month, the state has allowed the protesters opposing construction of the Thirty Meter Telescope (TMT) to remain camped across the street.

To me, this illustrates where the state’s loyalties lie. They might talk a tough game, but they are really doing nothing to enforce the law and the legally negotiated agreements between the astronomical community and the various Hawaiian cultural institutions that had agreed on the conditions for building TMT. By allowing the protesters to continue to break the law and set up house on the mountain, the state is saying they really want construction to cease.

I say, maybe the time has come for astronomers to agree, and move lock, stock, and barrel south to Chile. In addition, maybe tourists should consider other places to visit, rather than a place that exhibits such hostility to outsiders.

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TMT protesters gather outside IAU conference in Hawaii

4:20 pm

Two quotes from the article I think clarify what is going on here. First, one of the protester signs illustrated very clearly the level of ignorance and foolishness of the protesters;

“We don’t want your big toy telescopes on our sacred mountain.”

Then there was this significant point noted in the article:

The demonstrators are a diverse group but are generally led by men and women in their twenties who were educated in modern Hawaiian-language immersion schools. Decades ago, children were beaten for speaking the language; today it is a source of cultural pride and a touchstone for Hawaii’s burgeoning sovereignty movement.

In other words, for the past few decades the public schools in Hawaii have been focused on teaching young Hawaiians to hate American culture and whites. Instead, race and ethnicity come before concepts of freedom and individual rights. How nice. (If you don’t believe me spend just a little time studying what these native peoples courses teach. I’ve seen it here in Arizona as well as in New York. They really do teach anti-Americanism and a hatred of whites.)

However, considering that Hawaii has been controlled exclusively by leftwing Democrats for decades, no one should be surprised.

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Twenty arrested for blocking trucks to different mountain telescope in Hawaii

10:23 pm

Twenty protesters were arrested on Friday trying to block trucks leaving for the summit of Haleakala on the island of Maui, as part of the work building the new Daniel K. Inouye Solar Telescope there.

This protest did not involve Mauna Kea. It suggests that the hostility to astronomy and outsiders on Hawaii is growing. It also suggests to me that maybe astronomers and outsiders should consider going somewhere else for their research and tourism. Let’s find out how happy these Hawaiian protesters will be if the money these industries bring to their island disappears.

Another article notes that seven others were arrested on Mauna Kea as well. It thus appears that the Hawaiian government is finally moving to enforce the law there.

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The supernova of 1987 finally begins to fade

7:32 pm

Almost thirty years after Supernova 1987a became the first naked eye supernova since the invention of the telescope, the necklace ring of spots that the explosion’s shockwave ignited in the late 1990s are finally beginning to fade.

But now the hotspots have slowly begun to fade, Claes Fransson (Stockholm University, Sweden) and colleagues report in the June 10th Astrophysical Journal Letters. The team studied images taken by the Hubble Space Telescope from 1994 to 2014, and spectra from the Very Large Telescope spanning 2000 to 2013. Based on the rate at which the hotspots are fading, the researchers predict the glittering necklace will fade away sometime between 2020 and 2030, with the calculations favoring closer to 2020. The clumps of gas in the central ring are likely dissolving, thanks to a combination of instabilities and conduction in the hot gas surrounding the clumps. In other words, the central ring is being destroyed.

The show really isn’t over. The aftermath of a star exploding goes on for thousands of years. So to will SN1987a’s show.

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