{"id":375237,"date":"2026-08-15T06:36:20","date_gmt":"2026-08-15T06:36:20","guid":{"rendered":"https:\/\/wolfscientific.com\/?p=375237"},"modified":"2026-08-15T06:36:20","modified_gmt":"2026-08-15T06:36:20","slug":"las-senales-distantes-de-voyager-1-siguen-llegando-a-la-tierra-tras-49-anos-a-pesar-de-la-debil-potencia-de-transmision","status":"publish","type":"post","link":"https:\/\/wolfscientific.com\/?p=375237","title":{"rendered":"Las se\u00f1ales distantes de Voyager 1 siguen llegando a la Tierra tras 49 a\u00f1os, a pesar de la d\u00e9bil potencia de transmisi\u00f3n."},"content":{"rendered":"
<\/div>\n

Voyager 1 continues to send back data from interstellar space via a radio transmitter outputting approximately 22 watts. This is similar to the energy of a small refrigerator light bulb, yet the signal is still detectable over a staggering distance of more than 16 billion miles.<\/p>\n

There is a time-sensitive amendment to address at the outset. When I verified NASA\u2019s live Voyager status table<\/a> on August 15, 2026, the spacecraft was around 16.31 billion miles from Earth, and its signal took about 24 hours and 19 minutes to reach us. \u201cAlmost a full day\u201d has just transformed into slightly over a full day. The title maintains the requested language; the real-time measurement has progressed.<\/p>\n

The 22 watts is the energy emitted by Voyager<\/h2>\n

The refrigerator-bulb analogy is helpful, but it can be easily misinterpreted. A JPL description of Voyager 1\u2019s transmitter<\/a> indicates its output as approximately 22 watts. A comprehensive JPL radio-science report<\/a> cites 23 watts. These values refer to the radio-frequency power sent out by the spacecraft, not what is received on Earth.<\/p>\n

Voyager\u2019s 3.7-meter high-gain antenna directs this energy toward Earth. Even a focused beam disperses, however. After traversing billions of miles, its energy is spread across an enormous area.<\/p>\n

The bulb analogy illustrates the transmitter. It does not reflect the signal that is received.<\/p>\n

Earth detects a trace, not 22 watts<\/h2>\n

The JPL radio-science report estimated a signal flux around 10-23<\/sup> watts per square meter when Voyager was closer than it presently is. The exact amount received on Earth varies based on the radio band, distance, antenna gain, alignment, bandwidth, and other factors. The scale is crucial: only an infinitesimal portion of the transmitted energy is gathered on Earth.<\/p>\n

Engineers possess various advantages over someone searching without guidance. They are aware of Voyager\u2019s expected location, the frequencies it operates on, how its motion alters those frequencies, and how the data is encoded. Large dishes capture the incoming radio signals. Low-noise instrumentation and narrow-band processing subsequently differentiate the anticipated signal from the background noise over time.<\/p>\n

\u201cWhispering\u201d serves as a metaphor. The spacecraft transmits encoded radio telemetry, not sound, and NASA does not continuously monitor it.<\/p>\n

Multiple dishes can listen simultaneously<\/h2>\n

Voyager communicates via NASA\u2019s Deep Space Network, with facilities located in California, Spain, and Australia. Their strategic placement allows controllers to connect with distant spacecraft as Earth rotates, while antenna time slots are allocated among many missions.<\/p>\n

Occasionally, a single dish may not suffice for the faintest scientific data stream. In April 2024, NASA combined five antennas in Madrid<\/a> to capture Voyager 1\u2019s plasma-wave data, while a sixth monitored the carrier frequency. Combining dishes enhances the effective collecting area without altering the transmitter onboard Voyager.<\/p>\n

This narrative is as much about the receiver as it is about the spacecraft.<\/p>\n

A round trip now requires over two days<\/h2>\n

As of the August 15 observation, one-way light time was approximately 24 hours and 19 minutes. Thus, a command sent from Earth and an immediate reply necessitate a minimum of about 48 hours and 39 minutes. Execution time, transmission schedules, and analysis further extend this duration.<\/p>\n

The figures will not remain static. Voyager is moving further away, but Earth\u2019s orbit around the Sun can either shorten or lengthen the distance between Earth and the spacecraft throughout the year. NASA\u2019s counter is a real-time measurement, not a fixed statistic.<\/p>\n

Voyager 1 was launched on September 5, 1977, making it nearly 49 years old. The signal arriving today also began its journey more than a day ago.<\/p>\n

\u201cFor now\u201d represents an engineering limitation<\/h2>\n

NASA\u2019s April 2026 mission update<\/a> indicates that Voyager 1\u2019s power supply diminishes by about four watts each year. Following the low-energy charged-particle<\/p>\n","protected":false},"excerpt":{"rendered":"

Voyager 1 continues to send back data from interstellar space via a radio transmitter outputting approximately 22 watts. This is similar to the energy of a small refrigerator light bulb, yet the signal is still detectable over a staggering distance of more than 16 billion miles. There is a time-sensitive amendment to address at the […]<\/p>\n","protected":false},"author":1,"featured_media":375238,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[179],"class_list":["post-375237","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-source-scienceblog-com"],"_links":{"self":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts\/375237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=375237"}],"version-history":[{"count":0,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts\/375237\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/media\/375238"}],"wp:attachment":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=375237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=375237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=375237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}