ボイジャー2号が太陽系外の星間物質の電子密度の上昇を観測
News Week Japan,
＜1977年に打ち上げられた無人宇宙探査機「ボイジャー2号」は、太陽系を取り囲む「太陽圏」を脱し、なお星間物質の電子密度などを計測している...... ＞ NASA（アメリカ航空宇宙局）の無人宇宙探査機「ボイジャー2号」は、1977年8月に打ち上げられて以来…
NASA's Voyager 2 Spacecraft Detects Increase in Density Levels of the Interstellar Space
Yahoo! News,
NASA’s Voyager 2 spacecraft has reported a significant increase in the density of space outside our known solar system.
NASA's Voyager 2 Spacecraft Detects Increase in Density Levels of the Interstellar Space
News 18,
NASA’s Voyager 2 spacecraft has reported a significant increase in the density of space outside our known solar system.
Voyager missions find sharp increase in density of space beyond our solar system
Dailyhunt,
NASA's spacecraft Voyager 2 has reported a significant increase in the density of space outside the solar system.