Bernstein, Aaron, Naturwissenschaftliche Volksbücher, Bd. 17-21, 1897

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        <div xml:id="echoid-div89" type="section" level="1" n="55">
          <p>
            <s xml:id="echoid-s1788" xml:space="preserve">
              <pb o="158" file="166" n="166"/>
            ſich in der Sekunde an 43 Kilometer dem Sonnenſyſtem. </s>
            <s xml:id="echoid-s1789" xml:space="preserve">Dieſe
              <lb/>
            Bewegung iſt ziemlich genau feſtgeſtellt und gehört mit zu den
              <lb/>
            ſtärkſten Geſchwindigkeiten, die auf ſpektroſkopiſchem Wege bis-
              <lb/>
            her ermittelt worden ſind. </s>
            <s xml:id="echoid-s1790" xml:space="preserve">Sein nächſter Nachbar, das zweite
              <lb/>
            Hinterrad des Wagens, übertrifft ihn noch in der Geſchwin-
              <lb/>
            digkeit ſeiner Bewegung im Weltraum; </s>
            <s xml:id="echoid-s1791" xml:space="preserve">aber dieſe Bewegung
              <lb/>
            iſt die entgegengeſetzte. </s>
            <s xml:id="echoid-s1792" xml:space="preserve">Er entfernt ſich von der Stelle, welche
              <lb/>
            das Sonnenſyſtem jetzt einnimmt, um faſt 45 Kilometer per
              <lb/>
            Sekunde. </s>
            <s xml:id="echoid-s1793" xml:space="preserve">Dieſes Ergebnis iſt indeſſen noch um 7 Kilometer
              <lb/>
            unſicher. </s>
            <s xml:id="echoid-s1794" xml:space="preserve">Durchſchnittlich kann man alſo annehmen, daß dieſe
              <lb/>
            zwei Sterne, welche die Hinterräder des Himmelswagens bilden,
              <lb/>
            ſich von einander mit der Geſchwindigkeit von faſt 90 Kilo-
              <lb/>
            metern in jeder Sekunde entfernen.</s>
            <s xml:id="echoid-s1795" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1796" xml:space="preserve">Von den zwei Vorderrädern des Wagens iſt der Stern
              <lb/>
            zweiter Größe gleichfalls im Begriff, ſich von uns zu ent-
              <lb/>
            fernen, und zwar mit einer Geſchwindigkeit von 27 Kilometer
              <lb/>
            pro Sekunde, wobei noch circa 4 Kilometer zweifelhaft ſind.
              <lb/>
            </s>
            <s xml:id="echoid-s1797" xml:space="preserve">Sein nächſter Nachbar, das vierte Rad am Wagen, der ein
              <lb/>
            Stern dritter Größe iſt, wandert ebenfalls von uns fort, jedoch
              <lb/>
            nur mit einer Geſchwindigkeit von 16 Kilometer in der Se-
              <lb/>
            kunde. </s>
            <s xml:id="echoid-s1798" xml:space="preserve">Ein Zuſammenhang zwiſchen dieſen zwei Sternen iſt
              <lb/>
            ebenfalls nicht vorhanden. </s>
            <s xml:id="echoid-s1799" xml:space="preserve">Da in den dritthalbtauſend Jahren,
              <lb/>
            in welchen man die Helligkeit dieſer Sterne beobachtet hat,
              <lb/>
            ſtets die Lichtſtärke derſelben ſich gleich geblieben zu ſein ſcheint,
              <lb/>
            ſo muß man auf eine ungeheure Entfernung dieſer zwei Sterne
              <lb/>
            von uns ſchließen, die immer noch keinen Unterſchied ihrer
              <lb/>
            Größe bemerkbar gemacht hat.</s>
            <s xml:id="echoid-s1800" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1801" xml:space="preserve">Intereſſant ſind die zwei den Rädern nächſten Sterne in
              <lb/>
            der Deichſel des Wagens. </s>
            <s xml:id="echoid-s1802" xml:space="preserve">Sie ſind beide Sterne zweiter
              <lb/>
            Größe. </s>
            <s xml:id="echoid-s1803" xml:space="preserve">Beide entfernen ſich von uns, und zwar iſt ihr Lauf
              <lb/>
            ſo ziemlich ein gleicher. </s>
            <s xml:id="echoid-s1804" xml:space="preserve">Während ſich der den Rädern des
              <lb/>
            Wagens nächſte Stern in der Deichſel mit einer Geſchwindig-
              <lb/>
            keit von 25 Kilometern von uns fortbewegt, eilt ſein </s>
          </p>
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    </echo>
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