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Mario Livio
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Mario Livio is an internationally known astrophysicist, a bestselling author, and a popular lecturer. His newest book, Brilliant Blunders: From Darwin to Einstein -- Colossal Mistakes by Great Scientists that Changed Our Understanding of Life and the Universe, was released in May 2013. His popular book The Golden Ratio: The Story of Phi, the World’s Most Astonishing Number won the Peano Prize for 2003, and the International Pythagoras Prize for 2004 as the best popular book on mathematics, while his Is God a Mathematician? was selected by The Washington Post as one of the best books of 2009.

Livio is an astrophysicist at the Space Telescope Science Institute (STScI), which conducts the scientific program of the Hubble Space Telescope, and will conduct the program for the upcoming James Webb Space Telescope. He has a regular blog, A Curious Mind, about science, art, and the links between them.

During the past decade, Livio’s research focused on supernova explosions and their use in cosmology to determine the rate of expansion of the universe, and the nature of the “dark energy” that causes the cosmic expansion to accelerate. He also worked on extrasolar planets and the search for life in the universe.

Entries by Mario Livio

Curiosity

(0) Comments | Posted July 28, 2015 | 10:55 AM

During the past two weeks, we have witnessed two exciting events in space science. First, there were the spectacular images and spectra that NASA's New Horizons mission has taken of the dwarf planet Pluto (Figure 1). Second, the discovery that the planet Kepler 452b and its host star form the...

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A Bold Future Telescope Proposed for Space Astronomy

(3) Comments | Posted July 6, 2015 | 1:01 PM

In the April 16, 2015, issue of Nature, I published an article that was entitled "Hubble's Legacy." In that article, I argued that the lesson from the amazing success of the Hubble Space Telescope has been that it is better to fund the right experiment fully...

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The Measure of All Mass

(11) Comments | Posted April 29, 2015 | 5:14 PM

The mass of the Earth is about M = 5.97219 × 1024 Kg. The mass of the Sun is M = (1.98855 ± 0.00025) × 1030 kg. The unit that we use to measure these masses is the kilogram, determined from a block of platinum and iridium, that celebrated its...

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Hubble at 25!

(2) Comments | Posted March 31, 2015 | 3:27 PM

On April 24th, the Hubble Space Telescope will celebrate 25 years since its launch. This provides an excellent opportunity to very briefly summarize what I regard as Hubble's greatest scientific achievements. I should emphasize two things: (1) I have used my personal judgment (and biases) in creating this list; other...

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Golden Stars and a Golden Curve

(1) Comments | Posted March 10, 2015 | 3:02 PM

The Golden Ratio, that curious, never-ending, never-repeating number, 1.61803398875..., has an uncanny tendency to pop up where it is least expected. (See my previous piece, "The Golden Ratio and Astronomy.") Consequently, I cannot say that I was extremely surprised when a recent study...

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Darwin's Revolutionary Evolution

(9) Comments | Posted February 17, 2015 | 12:26 PM

On Feb. 12 we celebrated Charles Darwin's 206th birthday. (Fig. 1 shows Darwin late in life.) This calls for at least a brief essay, to remind ourselves of Darwin's remarkable achievement.

2015-02-17-Darwin.jpg
Figure 1. Darwin in his old age (reproduced by kind permission of the...

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Intelligent Machines -- On Earth and Beyond

(0) Comments | Posted February 3, 2015 | 10:44 AM

Stephen Hawking famously warned in 2010 that based on the history of humankind, an alien, more-advanced civilization would probably destroy us. "We only have to look at ourselves to see how intelligent life might develop into something we wouldn't want to meet," he said. Hawking expressed a similar...

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Andromeda: Our Sister Galaxy

(3) Comments | Posted January 21, 2015 | 9:20 AM

In Greek mythology, Andromeda, the daughter of Cepheus and Cassiopeia, was stripped and chained to a rock, only to be saved from certain death in the claws of a sea monster by Perseus (Figure 1 shows a wonderful depiction of the myth by Lord Frederic Leighton).

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Pillars of Creativity

(0) Comments | Posted January 8, 2015 | 2:00 PM

It is very rare that a scientific experiment not only continues to be generally productive, but to yield cutting-edge results for 25 years. Yet, this is precisely what is happening with the Hubble Space Telescope. This, by now legendary telescope, is entering its 25th year of operation in 2015. Through...

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Dark Matter -- Still Dark

(0) Comments | Posted December 10, 2014 | 8:49 AM

Dark matter continues to live up to its name. The most recent results from the European Space Agency's Planck spacecraft appear to cast serious doubt on previous claims of potential detections of the elusive dark matter particles.

For decades, astronomers have found what appears to be compelling evidence for the...

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The Five-Pointed Star as a Symbol

(1) Comments | Posted November 20, 2014 | 11:34 AM

Humans have been fascinated by stars -- those luminous points of light embedded in the night's darkness -- for millennia. Long before any understanding of their scientific significance emerged, the stars' association with the heavens has turned them into symbols of the warfare between light, or spirit, and darkness, or...

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Space Missions Are Never 'Routine'

(0) Comments | Posted November 4, 2014 | 12:02 PM

This past week we had a sad and harsh reminder that when it comes to space exploration, no undertaking can be considered "ordinary," and success is never guaranteed.

On Friday, Virgin Galactic's SpaceShip Two exploded in California's Mojave Desert, killing one pilot and badly injuring a second one (Figure 1)....

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On William Blake's 'Newton'

(3) Comments | Posted October 23, 2014 | 1:24 PM

Between 1795 and 1805, the mystic poet, painter and printmaker William Blake produced a print that he titled "Newton" (Figure 1). Just like the mythological figure Urizen, that to Blake portrayed law and reason in his piece "The Ancient of Days" (Figure 2), Blake's Newton holds a compass. To Blake,...

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An Astronomer's Guide to the Galaxy

(1) Comments | Posted October 1, 2014 | 2:27 PM

Measuring distances in astronomy is notoriously difficult. Indeed, a quick glance at the night's sky reveals only a two-dimensional image, with no depth information. Yet, knowledge of precise distances is crucial, since that's the only way to determine the true, intrinsic luminosity of an object, from the apparent one, measured...

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Cosmic Inflation: How Progress in Science Is Achieved

(12) Comments | Posted September 24, 2014 | 12:04 PM

You may remember that about six months ago, scientists got all excited about the potential detection of ripples from the Big Bang -- direct evidence (if it were to be confirmed) for the event known as "cosmic inflation" (see e.g., "A Visit...

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The Top Science Mysteries

(30) Comments | Posted September 16, 2014 | 3:49 PM

There are numerous websites entitled "Top 10 Unsolved Science Mysteries," or some slight variations on this theme. However, even a cursory examination of these sites reveals that the choices for the "top 10" are far from being unanimous. Here I have identified three "mysteries" that appear on many -- but...

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We Are Star Dust

(1) Comments | Posted August 19, 2014 | 12:21 PM

Humans have always been fascinated with the heavens. Our distant ancestors understood that Mother Earth was receiving its daylight warmth from the majestic Sun, and its pale, nocturnal light from the Moon. In addition, there were those twinkling point sources of light that the ancients connected by imaginary lines to...

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The Music of the Galaxies

(0) Comments | Posted August 5, 2014 | 3:35 PM

2014-08-05-fig1_sm.jpg Figure 1. The spiral galaxy M74.

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Figure 2. The elliptical galaxy NGC 4150.

There is a common phrase "no two snowflakes are alike." Astronomers in the early part of the...

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The Search for Life Is Picking Up Speed!

(0) Comments | Posted July 22, 2014 | 1:33 PM

Recently, the search for extraterrestrial life has started to gain significant momentum. NASA has just announced, for instance, that it is setting aside $25 million to develop the scientific instruments needed for a mission to Europa (Figure 1). This is the ice-covered moon of Jupiter that could harbor life in...

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The First Female Astronomer

(1) Comments | Posted July 9, 2014 | 4:44 PM

In 2009 the International Astronomical Union (IAU) held its general assembly in Rio de Janeiro. Of the 2,109 participants, 667 (or 31.6 percent) were women. Indeed, in recent years, the fraction of women among astronomers has been growing continuously. But who is considered to have been the first female astronomer?...

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