Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 17: Problem 71

Search the World Wide Web for information about Gaia, a European Space Agency (ESA) spacecraft planned to extend the work carried out by Hipparcos. When is the spacecraft planned to be launched? How will Gaia compare to Hippar\(\cos\) ? For how many more stars will it be able to measure parallaxes? What other types of research will it carry out?

Short Answer

Expert verified
The actual answer will depend upon what information is found after following these research steps as it requires real-time data that can only be found from reliable sources, such as ESA's official website.

Step by step solution

01

Research on the Launch Date of Gaia

Using trustworthy internet sources like the ESA's official website, search to find information about when Gaia was scheduled to be launched.
02

Comparison between Gaia and Hipparcos

Look for information comparing Gaia and Hipparcos. This could be in terms of technology, mission goals, instruments used and more.
03

Find number of stars Gaia can measure parallaxes

Research to learn how many more stars Gaia is designed to measure parallaxes for than its predecessor, Hipparcos.
04

Identify Other Types of Research Gaia will Perform

Identify any other research tasks Gaia is set to carry out by researching its mission details. These could include but not limited to: sky mapping, measuring celestial bodies, or studying celestial anomalies.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

It is desirable to be able to measure the radial velocity of stars (using the Doppler effect) to an accuracy of \(1 \mathrm{~km} / \mathrm{s}\) or better. One complication is that radial velocities refer to the motion of the star relative to the Sun, while the observations are made using a telescope on the Earth. Is it important to take into account the motion of the Earth around the Sun? Is it important to take into account the Earth's rotational motion? To answer this question, you will have to calculate the Earth's orbital speed and the speed of a point on the Earth's equator (the part of the Earth's surface that moves at the greatest speed because of the planet's rotation). If one or both of these effects are of importance, how do you suppose astronomers compensate for them?

The Sun experiences solar flares (see Section 16-10). The amount of energy radiated by even the strongest solar flare is not enough to have an appreciable effect on the Sun's luminosity. But when a flare of the same size occurs on a mainsequence star of spectral class \(M\), the star's brightness can increase by as much as a factor of 2 . Why should there be an appreciable increase in brightness for a main-sequence M star but not for the Sun?

Most of the bright stars in the night sky (see Appendix 5 ) are giants and supergiants. How can this be, if giants and supergiants make up only \(1 \%\) of the population of stars?

What information about stars do astronomers learn from binary systems that cannot be learned in any other way? What measurements do they make of binary systems to garner this information?

What is the inverse-square law? Use it to explain why an ordinary lightbulb can appear brighter than a star, even though the lightbulb emits far less light energy per second.
See all solutions

Recommended explanations on Physics Textbooks

Electromagnetism

Read Explanation

Modern Physics

Read Explanation

Medical Physics

Read Explanation

Solid State Physics

Read Explanation

Linear Momentum

Read Explanation

Force

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free