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Overview of Rocky Planets and Super Blood Moon Eclipse




credit: NASA/Joint police-California Institute of Technology

Sky Watch Highlights in May

What̵

7;s going on in May? This month, rocky planets gather, a super bloody lunar eclipse!

  • May 3: Bright planet Saturn Will appear to the left of the half-bright moon.
  • May 4: The moon forms a large triangle with bright Saturn and large planets to the south-southeast. Jupiter.
  • Mid-May: You will have the opportunity to see all four rocky inner planets of our solar system at the same time with your own eyes.
  • May 26: Note the total lunar eclipse during the second super month of 2021.

Starting in mid-May, if you can clearly see the western view, you will have the opportunity to see all four rocky inner planets of our solar system at the same time with your own eyes.

View all four inner planets

Starting in mid-May, all four inner planets (including the Earth!) can be seen after sunset. Image source: NASA / JPL-Caltech

Starting around May 14, move your gaze westward to about half an hour after sunset, and see if you can spot Mercury in local time. Venus, with Mars. (Moreover, the earth is hard to miss.)

To see near the horizon, you need an unobstructed view-no trees or buildings nearby. The best places to go are the shores of lakes or beaches, open plains or high mountains or tall buildings.

In addition to the planets, from the 14th to the 17th, the crescent moon also joined the party, forming a lovely planetary picture. Now, Venus will become very low. (It is easier to observe on your own later in the summer.) But for now, use this opportunity to observe all the inner planets in a single view.

Moon is reddish during eclipse

Because sunlight is filtered through the earth’s atmosphere, the color of the moon during a lunar eclipse is usually reddish.Image source: NASA’s Scientific Visualization Studio

May 26 brings a total lunar eclipse. Within a few hours, the moon will pass through the shadow of the earth, making it darker and usually red. The red color comes from the filtering of sunlight in the earth’s atmosphere-the halo produced by all sunrises and sunsets on the earth at that time.

Because of the reddish color, a lunar eclipse is often called a “blood moon.” It seems difficult to predict how red it will be, but the dust in the atmosphere will have an effect. (Remember, there have been several prominent volcanic eruptions recently.)

Lunar eclipses occur when the full moon occurs, and the full moon occurs when the moon is also close to the point in its orbit that is closest to the Earth (usually called the “super moon”).

Unlike a solar eclipse (which you should not watch), it is safe to watch a lunar eclipse with your eyes. Compared to solar eclipses, solar eclipses generally have a narrower field of view, while lunar eclipses are at least partially visible anywhere on the earth at night.

Global visibility May 2021 lunar eclipse

This map shows the global visibility of the May 2021 lunar eclipse. Image source: NASA / JPL-Caltech

Now, no matter where you are on the earth, lunar eclipses will happen at the same time, but of course what time your clock reads during the lunar eclipse depends on your time zone. The best place to watch this eclipse is the Pacific Rim-America, Australia and New Zealand, and the western part of East Asia. For the United States, the best viewing locations are Hawaii, Alaska and the western states.

Visibility in the U.S. Lunar eclipse in May 2021

The lunar eclipse in May 2021 will be best viewed in Hawaii, Alaska and the western states of the United States. Image source: NASA / JPL-Caltech

For the eastern United States, lunar eclipses begin to appear at sunset. When the moon starts to darken, you may be able to observe the first part of the lunar eclipse, but when the shadow of the earth begins to cover the moon, the moon will be close to or on the horizon.

The farther you are from the west, the more solar eclipses you will see before the moon sets in the morning. People in the western half of the country can almost see the entire lunar eclipse.

Therefore, if you are on the path of a solar eclipse, please check your local time for the best viewing nearby. And, if you are in the United States, if you want to see this rare celestial event, prepare to get up early: the super blood lunar eclipse.

Daily guide

May 1st: May 1st

May 1, 2021, Saturday will be Labor Day. Currently, we divide the year into four seasons based on the winter solstice and the vernal equinox. Summer begins at the summer solstice in June. This is similar to summer, the hottest season of the year.

Most parts of pre-Christian northern Europe celebrated “inter-seasonal days”, that is, halfway between the supreme and the vernal equinox, dividing the seasons of these days. Using this earlier definition, summer is a quarter of the year with the longest daylight, beginning with Beltane, which is traditionally celebrated on May 1st (mid-spring). Many traditions of Labor Day in Europe can be traced back to the earlier celebrations that began in these summers.

May 3

On Monday morning, May 3, 2021, Saturn will appear to the left of the semi-illuminated moon. At 2:22 AM Eastern Daylight Time, Saturn will appear about 8 degrees to the left of the moon, which is when the pair of star clusters rises south-southeast.Saturn will appear about 7 degrees above and to the left of the moon, because the morning twilight starts at 5:03 AM

On Monday afternoon, the waning moon will appear half full when it reaches its final quarter at 3:50 PM Eastern Time.

May 4

By the morning of Tuesday, May 4, 2021, the moon will move to form a large triangle with the planets of Saturn and Jupiter in the south-southeast. Saturn will rise at 2:17 AM Eastern Time. The moon and Jupiter rose to the lower left corner of Saturn at about the same time at 3:01 and 3:02 in the morning, and Jupiter was about 10 degrees from the left end of the moon.By the time the dawn begins at 5:02 AM, the moon will appear about 18 degrees above the southeast horizon.

May 5

By the morning of Wednesday, May 5, 2021, the moon appears to have moved about 6 degrees below Jupiter, rising east-southeast at 3:33 a.m. EDT, approximately 1.5 hours before 5:01 a.m., Saturn Appears in the upper right.

May 11

Tuesday afternoon, May 11, 2021, 1:24 PM US Eastern Time (May 11, 2021 17:24 UTC, 12 minutes uncertain), near-Earth objects (2021 GK1), between 33 and 74 feet (Between 10 and 23 meters), it will pass through the earth at a speed of 1.5 moon landing distances and travel at a speed of 4,500 miles per hour (2.01 kilometers per second).

The new moon will be at 3:00 pm EST on Tuesday, when the moon passes between the earth and the sun and cannot be seen from the earth. Since this new moon is near the farthest part of the moon’s orbit from the earth, some people have begun to use the term “micro moon” to mean the antonym of “super moon.”

At 5:54 pm Eastern Time on Tuesday, the Moon will be located at the apogee farthest from the Earth in this orbit.

May 11-12

In most lunar and solar calendars, the day on or after the new moon marks the beginning of the new moon. The sunset on May 11, 2021, marked the beginning of Sivan in the Hebrew calendar. The fourth month of the Chinese calendar starts on May 12, 2021 (midnight in the Chinese time zone, 12 hours earlier than US Eastern Time). In the Islamic calendar, the waxy crescent moon is seen for the first time after several months start after the new moon. Depending on whether the new moon is actually seen (for many Muslim communities, from the holy city of Mecca), the sunset on Wednesday, May 12, 2021 may mark the beginning of Shawwal and the end of Ramadan. This marks the end of the month-long fast in Ramadan and the beginning of Eid al-Fitr, which may last as long as three days in some countries.

On the evening of Wednesday, May 12, 2021, you may be able to see a very thin waxy crescent moon on the northwest horizon from about 30 minutes after sunset to the opposition of Venus, appearing on the left side of Venus about 5 before the end of evening. minute. However, without binoculars or telescopes, the sky may be too bright and the crescent moon too thin to be seen.

May 13

On the evening of Thursday, May 13, 2021, the planet Mercury will appear about 3 degrees to the right of the thin waxy crescent moon. When the evening twilight ends (9:19 PM EST), the pair will appear about 8 degrees northwest of the horizon. Mercury will first be fixed at 10:06 PM, 47 minutes later, and then at 6 minutes. After the moon fell.

May 15

On the evening of May 15, 2021 (Saturday), Mercury will reach its highest point above the horizon, and dusk will end. At the end of this phantom, Mercury will tilt approximately 7 degrees west-northwest.

Also on Saturday night, a waxy crescent moon will appear in the northwestern northwest of the lower right corner of the Martian planet, and two moons will appear around midnight.

May 16

By the evening of Sunday, May 16, 2021, the waxing crescent moon will move to the lower left corner of the bright star Pollux, and will be set approximately 3.5 hours after the end of twilight (12:49 AM EST on Monday) .

May 17

On the morning of Monday, May 17, 2021, it will be the time when the maximum angular separation between the planet Mercury and the sun is reached. This is the phantom (called maximum elongation) observed from the Earth, which passes through a large enough Half of the light appeared in the telescope. Since the angle between the line between the sun and Mercury and the horizon changes with the seasons, the date when Mercury and the sun are the furthest apart from the earth is different from the date of the highest point of Mercury on the horizon at the end of twilight.

May 19

On the afternoon of Wednesday, May 19, 2021, the Moon will appear to be full when it reaches its first quarter at 3:13 PM Eastern Time. Starting Wednesday night, as the twilight ends, the bright Venus Venus will converge with Mercury on the west-northwest horizon.

May 19-20

From Wednesday evening to Thursday morning, May 19-20, the full moon of the first half of the month will appear above the bright star Regulus, which will begin to set at 2:07 AM Eastern Time on Thursday as early as Thursday.

May 23-24

On Sunday night from the morning of Monday, May 23-24, the waxy bulge moon will appear to the left of the bright star Spica, initially about 7 degrees apart, and separate throughout the night, while Spica will be on Monday morning The approximately 3:52 setting is Eastern Time.

Late May or early June 2021 (2021-May-25 09:26 UTC, uncertainty of 7 days, 17 hours and 11 minutes), near-Earth objects (2013 VO11), spanning 19 to 43 feet (6 to 13 meters) ) Will pass through the earth at a lunar distance of 3.1 to 43.4 (nominal 3.4) and travel at a speed of 22,800 miles per hour (10.18 kilometers per second).

May 25

On the evening of Tuesday, May 25, 2021, at 9:51 pm Eastern Time, the moon will be in perigee, which is the closest orbit to the earth.

May 26

May 26 brings a total lunar eclipse. Within a few hours, the moon will pass through the shadow of the earth, making it darker and usually red. The red color comes from the filtering of sunlight in the earth’s atmosphere-the halo created by all sunrises and sunsets that occurred around the earth at that time.

The best place to watch this eclipse is the Pacific Rim-America, Australia and New Zealand, and the western part of East Asia. For the United States, the best viewing locations are Hawaii, Alaska and the western states.

Lunar eclipses occur when the full moon occurs, and the full moon occurs when the moon is also close to the point in its orbit that is closest to the Earth (usually called the “super moon”).

This is the second supermoon in 2021, occurring at 7:14 AM Eastern Time on Wednesday. (The first super moon of this year is on April 26.) From Monday night to Thursday morning, the moon will appear full.

Preston Dyches, Christopher Harris, and Lisa Poje are science communicators and space enthusiasts who produced for NASA at the Jet Propulsion Laboratory For the monthly video series. Bill Dunford, Gary Spiers, and Lyle Tavernier provided additional guidance on astronomy topics.

Retired NASA program manager Gordon Johnston provides daily guides.




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