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Posts by
Jorge Salazar
Bernard Amadei: Engineering with heart for world’s poor
Engineers without Borders works to build things such as systems to collect rainwater and photovoltaic solar cells to provide power in health clinics. Read more about engineering with heart.
November 22, 2007
Cities best for Earth in 21st century
As Earth becomes more urbanized, it be better off, according to George Martine, lead author of the 2007 State of World Population report. Are cities best for earth? Read more.
October 29, 2007
Extrasolar planet around a red giant
In 2007, a Penn State astronomer led a team that discovered an extrasolar planet around a red giant star. The star is HD 17092, located 300 light-years away in the direction of the constellation Perseus. Earth & Sky interviewed this astronomer.
October 9, 2007
Brian May describes spiritual lift from astronomy
Queen's Brian May told Earth & Sky, "I think that rock stars could be accused of losing their sense of perspective quite often. And this keeps me with one foot in a different kind of world, where it's necessary to be very humble."
October 1, 2007
Bang! An astronomy book by Brian May of Queen
Rock star Brian May is the guitarist for Queen. He's also co-author of a book about the other kind of stars. It's called, "Bang! The Complete History of the Universe."
October 1, 2007
Organics fall from space onto planets?
Do organics fall from space onto planets? In 2007, astronomers discovered what they claim is the largest negatively charged molecule yet found in space.
September 18, 2007
Dwarf planet bigger than Pluto
In 2007, when astronomers measured the mass of the dwarf planet Eris, they found that it's 27% more massive than Pluto. Astronomer Mike Brown, who discovered Eris, said, "We got lucky in that Eris has a moon going around it. And by tracking the orbit of the moon around the dwarf planet, you actually get to weigh how much the dwarf planet weighs."
August 8, 2007
Pulsar pair confirming Einstein theory
They call it 'Einstein's dream come true.' In 2004, astronomers reported the discovery of the first known double pulsar system. Both pulsars have masses greater than that of our sun, but are only 20 kilometers across. Their orbital separation is less than the sun's diameter, and they orbit each other in only 2.4 days. This pulsar pair provides confirmation for Einstein's theory of gravity.
August 2, 2007
Did Earthly life originate on Mars?
Did Earthly life originate on Mars? Robert Hazen, a scientist at the Carnegie Institution, talked to Earth & Sky about where signs of life off Earth are most likely to be found.
July 7, 2007
Seeking life on alien worlds? Look to plants
Some astronomers believe that the first signs of life on alien worlds might come from the gentle breathing out of plants. Read more about alien plants here.
June 29, 2007
