Parker Solar Probe Becomes Closest Spacecraft to Sun
The American space agency is reporting that its Parker Solar Probe now holds the record for the closest approach to the Sun by a human-made object.
NASA officials said the robotic spacecraft passed the old record of nearly 43 million kilometers from the Sun's surface on October 29. Officials said this information comes from the Parker Solar Probe team.
The old record for closest solar approach was set by a German-American spacecraft, called Helios 2, in April 1976.
The Parker Space Probe is expected to continue setting records as it moves even closer to the Sun. NASA officials say the spacecraft will get as close as 6.16 million kilometers from the surface during one of its visits. They expect that to happen in the year 2024.
"It's been just 78 days since Parker Solar Probe launched, and we've now come closer to our star than any other spacecraft in history," noted Project Manager Andy Driesman. He is with the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland.
The Parker Solar Probe also was expected to set a new record for the fastest spacecraft traveling relative to the Sun. The current record, held by Helios 2, is 246,960 kilometers an hour.
The Parker Solar Probe team is measuring the spacecraft's speed and position using NASA's Deep Space Network (DSN). The network sends a signal to the spacecraft, which then sends a signal back to DSN ground stations in Australia, Spain and the United States.
Space agency officials said the Parker Solar Probe's speed and position were estimated using DSN measurements made on October 24. The team used that information along with known orbital forces to estimate the spacecraft's speed and position from that point on.
The Parker Solar Probe will continue flying closer to the Sun's surface until it reaches its first perihelion — the point closest to the Sun in its orbit — on November 5.
The spacecraft will have to deal with extreme heat and radiation levels as it moves closer to the surface. However, the probe is expected to make observations that will add to scientists' understanding of the Sun.
I'm Jonathan Evans.
1.deal with 处理；应付
The President said the agreement would allow other vital problems to be dealt with.
2.set a record 创造记录
She set a record which nobody else can remotely approach.
3.along with 伴随
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4.approach to 接近
I shall shortly be attending an international conference.
5.The team used that information along with known orbital forces to estimate the spacecraft's speed and position from that point on.
from that point on 从那一刻起
From that point on, we had no more dealings with them.
I hated having to go to the toilet at night from that point on.
6.The Parker Space Probe is expected to continue setting records as it moves even closer to the Sun.
move closer to 靠近
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Take little steps every day to move closer to your dreams and ambitions.
美国宇航局官员表示，10月29日，这艘无人飞船打破了此前距太阳约4300万公里的记录 。官员们称，这些信息来自派克号太阳探测器团队 。
随着帕克号太阳探测器不断接近太阳，它有望继续创造新记录 。美国宇航局官员表示，该飞船将在其中一次靠近太阳的过程中，实现距太阳表面616万公里 。他们预计，这种情况将出现在2024年 。
项目经理安迪·德里斯曼（Andy Driesman）表示：“帕克号太阳探测器发射仅78天，就成为迄今最接近太阳的航天器 。”德里斯曼在马里兰州劳雷尔市的约翰霍普金斯应用物理实验室工作 。
帕克号太阳探测器还有望创下一项新纪录，成为相对太阳行进速度最快的航天器 。当前该记录的保持者是太阳神2号创下的246,960公里每小时 。
帕克号太阳探测器团队正在利用美国宇航局的深空网络（DSN）测量航天器的速度和位置 。该网络向航天器发送信号，航天器再将信号传回澳大利亚、西班牙和美国的深空网络地面站 。
美国宇航局官员称，帕克号太阳探测器的速度和位置是根据10月24日的深空网络测量值估算的 。该团队利用这些信息以及已知的轨道应力来估算航天器从那一刻起的速度和位置 。
当航天器不断靠近太阳表面时，必须面对极端高温和辐射 。然而，该探测器预计将进行观测，增加科学家对太阳的了解 。