Quotes by Debra Fischer - Page 1

Diamond planets truly are the most precious.
Debra Fischer /
Diamond
Planets
Precious
Truly
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When stars form a planet, they come in a bunch.
Debra Fischer /
Bunch
Form
Stars
Planet
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Science requires speculation, creativity, and wild ideas.
Debra Fischer /
Speculation
Wild
Requires
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The gas-giant planets in our solar system all have large moons.
Debra Fischer /
Planets
Solar System
Solar Solar System System
Solar
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Kepler's blown the lid off everything we know about extra-solar planets.
Debra Fischer /
Planets
Lid
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The building blocks of life are readily available throughout the universe.
Debra Fischer /
Building Blocks
Blocks
Readily
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Computers can't find the unexpected, but people can when they eyeball the data.
Debra Fischer /
Computers
Data
Unexpected
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Before 1995, the only planets we knew about were the planets in our solar system.
Debra Fischer /
Planets
Solar System
Solar Solar System System
Solar
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Ultimately, what we're looking for in the long run is to find other Earth-like planets.
Debra Fischer /
Planets
Long Run
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Our field is very focused on finding Earth 2.0, and anything we can do to narrow the search is helpful.
Debra Fischer /
Narrow
Search
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If few worlds have microbial life, it dramatically reduces the chances that more complex organisms exist.
Debra Fischer /
Organisms
Chances
Dramatically
Worlds
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There may be hundreds of small seed planets - or planetesimals - which grow in the disk of matter around a star.
Debra Fischer /
Disk
Planets
Hundreds
Seed
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It now seems logical that all the stars, like our own sun, must have formed with a system of planets around them.
Debra Fischer /
Logical
Planets
Formed
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Once we see stars with three times the metal content of our sun, the planet detection rate goes up to 20 per cent.
Debra Fischer /
Detection
Rate
Cent
Per
Metal
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The first exoplanet to be found around a sun-like star was discovered in 1995, just two years before I began studying exoplanet detection.
Debra Fischer /
Detection
Studying
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Prebiotic chemistry on other worlds is going to be common. Plenty of small rocky planets will have similar chemistry. It's almost a given.
Debra Fischer /
Chemistry
Planets
Rocky
Worlds
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As our sensitivity improves, we are finally seeing planets with longer orbital periods, planetary systems that look more like our solar system.
Debra Fischer /
Periods
Planets
Sensitivity
Solar System
Improves
Planetary
Solar
Systems
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We now know that stars which are abundant in heavy metals are five times more likely to harbor orbiting planets than are stars deficient in metals.
Debra Fischer /
Heavy
Metals
Planets
Abundant
Deficient
Harbor
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Whether a star has planetary companions or not is a condition of its birth. Those with a larger initial allotment of metals have an advantage over those without.
Debra Fischer /
Birth
Metals
Condition
Companions
Initial
Planetary
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Because Alpha Centauri is so close, it is our first stop outside our solar system. There's almost certain to be small, rocky planets around Alpha Centauri A and B.
Debra Fischer /
Planets
Solar System
Alpha
Rocky
Solar
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One of the first thoughts I had, when doing early exoplanet research, was that Earth and its many companions seemed very different from the planetary systems we were detecting.
Debra Fischer /
Companions
Planetary
Systems
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It can be very hard to know the history of a particular star, but once in a while, we get lucky and find stars with chemical compositions that likely came from in-falling planets.
Debra Fischer /
Planets
Chemical
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Generally speaking, exoplanets can be any size, and they are found in a wide range of orbits. Some have massive gas atmospheres; others are smaller with an icy or rocky composition.
Debra Fischer /
Composition
Gas
Icy
Massive
Range
Wide
Rocky
Smaller
Wide Range
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The universe has told us the most common types of planets are small planets, and our study shows these are exactly the ones that are most likely to be orbiting Alpha Centauri A and B.
Debra Fischer /
Common
Planets
Study
Universe
Alpha
Exactly
Likely
Types
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A 'serious' scientist in 1992 or 1993 had to admit the possibility that planets were really rare, that most stars might not have planets. We've gone from there to here - where most stars have planets.
Debra Fischer /
Planets
Possibility
Admit
Rare
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55 Cancri is extraordinarily rich in heavy elements and extraordinarily efficient at making planets - much more so than our sun - and those elements are the very ones you need to make planets that aren't just gas giants.
Debra Fischer /
Efficient
Elements
Gas
Giants
Heavy
Planets
Extraordinarily
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Further ahead, I'd like to see tiny spacebots - smaller than your cell phone - travel outside our solar system to the nearest star system, Alpha Centauri. By keeping the mass of those spacebots low, we could more easily accelerate them.
Debra Fischer /
Travel
Accelerate
Cell Phone
Mass
Solar System
Tiny
Ahead
Alpha
Cell
Star
Easily
Phone
Further
Low
Nearest
Smaller
Solar
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Naturally, we think that finding another Earth-like planet is identifying a site that's at least friendly here for the evolution of life. The primary goal of the Kepler mission is to statistically assess the occurrence of these small terrestrial worlds.
Debra Fischer /
Evolution
Friendly
Identifying
Site
Assess
Mission
Occurrence
Primary
Primary Goal
Terrestrial
Worlds
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I hope that vigorous space exploration continues and that humankind will have a space station that resides between Earth and the moon. Outside the gravitational field of Earth, we could launch robotic spacecraft to other destinations in our solar system.
Debra Fischer /
Exploration
Humankind
Moon
Solar System
Space Exploration
Vigorous
Destinations
Gravitational
Launch
Resides
Robotic
Solar
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Within the scientific community, there is healthy skepticism. And the question is, 'How do you ever get to a meaningful null result? How long and how hard do SETI scientists have to look for extraterrestrial intelligence and find nothing before they say, 'There is nothing. We are alone.'
Debra Fischer /
Extraterrestrial
Meaningful
Skepticism
Scientific
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In 1999, my team discovered that the star Upsilon Andromedae was circled by three gas-giant planets - the first distant multiplanet system ever found. That same year, other researchers observed the first 'transit' of an exoplanet - a planet blocking out a small fraction of the starlight as it passes in front of the star.
Debra Fischer /
Planets
Researchers
Blocking
Distant
Observed
Fraction
Passes
Transit
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There's no doubt that the search for planets is motivated by the search for life. Humans are interested in whether or not life evolves on other planets. We'd especially like to find communicating, technological life, and we look around our own solar system, and we see that of all the planets, there's only one that's inhabited.
Debra Fischer /
Doubt
Humans
Motivated
No Doubt
Planets
Solar System
Interested
Communicating
Inhabited
Search
Solar
System
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