- Nov 07, 2020
Debra Fischer Quotes
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- Last Updated on May 30, 2021
- Outside
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- Nov 07, 2020
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.
- Only
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- Nov 07, 2020
Before 1995, the only planets we knew about were the planets in our solar system.
- Must
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- Nov 07, 2020
It now seems logical that all the stars, like our own sun, must have formed with a system of planets around them.
- Long
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- Nov 07, 2020
Ultimately, what we're looking for in the long run is to find other Earth-like planets.
- Form
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- Nov 07, 2020
When stars form a planet, they come in a bunch.
- Know
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- Nov 07, 2020
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.
- Over
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- Nov 07, 2020
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.
- More
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- Nov 07, 2020
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.
- Earth
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- Nov 07, 2020
Our field is very focused on finding Earth 2.0, and anything we can do to narrow the search is helpful.
- Planets
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- Nov 07, 2020
Diamond planets truly are the most precious.
- Look
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- Nov 07, 2020
As our sensitivity improves, we are finally seeing planets with longer orbital periods, planetary systems that look more like our solar system.
- Life
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- Nov 07, 2020
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.
- Life
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- Nov 07, 2020
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.
- Grow
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- Nov 07, 2020
There may be hundreds of small seed planets - or planetesimals - which grow in the disk of matter around a star.
- History
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- Nov 07, 2020
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.
- See
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- Nov 07, 2020
Once we see stars with three times the metal content of our sun, the planet detection rate goes up to 20 per cent.
- Others
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- Nov 07, 2020
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.
- Earth
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- Nov 07, 2020
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.
- Just
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- Nov 07, 2020
The first exoplanet to be found around a sun-like star was discovered in 1995, just two years before I began studying exoplanet detection.
- Earth
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- Nov 07, 2020
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.
- More
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- Nov 07, 2020
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.
- Planets
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- Nov 07, 2020
Prebiotic chemistry on other worlds is going to be common. Plenty of small rocky planets will have similar chemistry. It's almost a given.
- Exist
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- Nov 07, 2020
If few worlds have microbial life, it dramatically reduces the chances that more complex organisms exist.
- Ideas
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- Nov 07, 2020
Science requires speculation, creativity, and wild ideas.
- Community
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- Nov 07, 2020