APOD - Andromeda Island Universe

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2020 April 30

Andromeda Island Universe
Image Credit & Copyright: Yuzhe Xiao

Explanation: The most distant object easily visible to the unaided eye is M31, the great Andromeda Galaxy some two and a half million light-years away. But without a telescope, even this immense spiral galaxy - spanning over 200,000 light years - appears as a faint, nebulous cloud in the constellation Andromeda. In contrast, a bright yellow nucleus, dark winding dust lanes, expansive blue spiral arms and star clusters are recorded in this stunning telescopic image. While even casual skygazers are now inspired by the knowledge that there are many distant galaxies like M31, astronomers debated this fundamental concept 100 years ago. Were these "spiral nebulae" simply outlying components of our own Milky Way Galaxy or were they instead "island universes", distant systems of stars comparable to the Milky Way itself? This question was central to the famous Shapley-Curtis debate of 1920, which was later resolved by observations of M31 in favor of Andromeda, island universe.

Experts Debate: How will humanity first discover extraterrestrial life?
Tomorrow's picture: galaxies away

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.

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Spring-clean your stress. Help COVID-19 research. Feed your brain.

Cleaning and organizing the space you spend most of your time in can keep your immune system strong, boost your mood, and offer a task that promotes focus and reflection during a trying time.

Daily life looks a bit different these days, but if you're starting a family we've got your back. Our week by week newsletter has guidance and support for taking care of your health and well-being through every stage of the parenthood journey. Sign up here.   5 Spring-Cleaning Benefits for Your Body and Mind Cleaning and organizing the space you spend most of your time in can keep your immune system strong, boost your mood, and offer a task that promotes focus and reflection during a trying time. Read on Want to Try the Mediterranean Diet? Here's How This diet rich in fish and vegetables can help you lose weight while preventing heart disease and type 2 diabetes. Get started with our meal plan. READ ON SPONSORED Find a Coaching App to Power Your Health We compare 3 top weight loss programs to help you reach your goals. GET STARTED NOW You Can Help COVID-19 Research from Your Living Room You can help researchers better understand the impact of the pandemic — and you don't even have to leave the couch to get involved. READ ON 4 Ways Your Gut and Brain Are Connected Learn how you can optimize the physical and biochemical connections between your digestive system and brain. READ ON More Top Reads ADVERTISEMENT Start a custom weight loss program Noom helps you adopt healthy habits so you can lose weight and keep it off. Customized to your goals and fitness needs based off a quick assessment. GET STARTED ADVERTISEMENT Start a custom weight loss program Noom helps you adopt healthy habits so you can lose weight and keep it off. Customized to your goals and fitness needs based off a quick assessment. GET STARTED When it comes to parenthood, we put you first Starting a family? We'll guide you with information to help you take care of you. SIGN UP Follow Us View in browser Did a friend send you this email? Subscribe here. To see all newsletters, click here. Privacy Policy|Unsubscribe © 2020 Healthline Media 660 3rd Street, San Francisco, CA 94107

A Staggering Toll: 30 Million Have Filed For Unemployment

Another 3.8 million people filed claims for unemployment last week, as the coronavirus pandemic continues to weigh on the U.S. job market. That brought the total for the past 6 weeks to 30.3 million.

A Staggering Toll: 30 Million Have Filed For Unemployment Another 3.8 million people filed claims for unemployment last week, as the coronavirus pandemic continues to weigh on the U.S. job market. That brought the total for the past 6 weeks to 30.3 million. Read More You received this message because you're subscribed to Breaking News Alerts emails. This email was sent by National Public Radio, Inc., 1111 North Capitol Street NE, Washington, DC 20002 Unsubscribe  |  Privacy Policy

Internal ICE Reviews Of 2 Immigrant Deaths Stoke Fears About COVID-19 Care

As COVID-19 spreads in detention, ICE documents shared with NPR reveal new details about the health care provided to two immigrants who died in 2017. Those facilities now face coronavirus outbreaks.

Internal ICE Reviews Of 2 Immigrant Deaths Stoke Fears About COVID-19 Care As COVID-19 spreads in detention, ICE documents shared with NPR reveal new details about the health care provided to two immigrants who died in 2017. Those facilities now face coronavirus outbreaks. Read More You received this message because you're subscribed to Breaking News Alerts emails. This email was sent by National Public Radio, Inc., 1111 North Capitol Street NE, Washington, DC 20002 Unsubscribe  |  Privacy Policy

APOD - The Ion Tail of New Comet SWAN

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2020 April 29

The Ion Tail of New Comet SWAN
Image Credit & Copyright: Gerald Rhemann

Explanation: Newly discovered Comet SWAN has already developed an impressive tail. The comet came in from the outer Solar System and has just passed inside the orbit of the Earth. Officially designated C/2020 F8 (SWAN), this outgassing interplanetary iceberg will pass its closest to the Earth on May 13, and closest to the Sun on May 27. The comet was first noticed in late March by an astronomy enthusiast looking through images taken by NASA's Sun-orbiting SOHO spacecraft, and is named for this spacecraft's Solar Wind Anisotropies (SWAN) camera. The featured image, taken from the dark skies in Namibia in mid-April, captured Comet SWAN's green-glowing coma and unexpectedly long, detailed, and blue ion-tail. Although the brightness of comets are notoriously hard to predict, some models have Comet SWAN becoming bright enough to see with the unaided eye during June.

Experts Debate: How will humanity first discover extraterrestrial life?
Tomorrow's picture: open space

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< | Archive | Submissions | Index | Search | Calendar | RSS | Education | About APOD | Discuss | >

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.

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Poll: Half Of Americans Financially Affected By Coronavirus

In an NPR/PBS NewsHour/Marist poll, 50% say they or someone in their household has lost hours or a job due to the pandemic. They also say their governor is doing a better job than the president is.

Poll: Half Of Americans Financially Affected By Coronavirus In an NPR/PBS NewsHour/Marist poll, 50% say they or someone in their household has lost hours or a job due to the pandemic. They also say their governor is doing a better job than the president is. Read More You received this message because you're subscribed to Breaking News Alerts emails. This email was sent by National Public Radio, Inc., 1111 North Capitol Street NE, Washington, DC 20002 Unsubscribe  |  Privacy Policy

Coronavirus Has Now Killed More Americans Than The Vietnam War

The number of lives taken by COVID-19 in the U.S. has reached a grim milestone: More people have died of the disease than the 58,220 Americans who perished in the Vietnam War.

Coronavirus Has Now Killed More Americans Than The Vietnam War The number of lives taken by COVID-19 in the U.S. has reached a grim milestone: More people have died of the disease than the 58,220 Americans who perished in the Vietnam War. Read More RELATED STORIES Tracking The Pandemic: How Quickly Is The Coronavirus Spreading State By State? You received this message because you're subscribed to Breaking News Alerts emails. This email was sent by National Public Radio, Inc., 1111 North Capitol Street NE, Washington, DC 20002 Unsubscribe  |  Privacy Policy

U.S. Surpasses 1 Million Coronavirus Cases

The U.S. now has more than 1 million confirmed cases of COVID-19 and more than 57,000 deaths, just months after the coronavirus was identified.

U.S. Surpasses 1 Million Coronavirus Cases The U.S. now has more than 1 million confirmed cases of COVID-19 and more than 57,000 deaths, just months after the coronavirus was identified. Read More You received this message because you're subscribed to Breaking News Alerts emails. This email was sent by National Public Radio, Inc., 1111 North Capitol Street NE, Washington, DC 20002 Unsubscribe  |  Privacy Policy

APOD - The Kepler-90 Planetary System

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2020 April 28

The Kepler-90 Planetary System
Illustration Credit: NASA Ames, Wendy Stenzel

Explanation: Do other stars have planetary systems like our own? Yes -- one such system is Kepler-90. Cataloged by the Kepler satellite that operated from Earth orbit between 2009 and 2018, eight planets were discovered, giving Kepler-90 the same number of known planets as our Solar System. Similarities between Kepler-90 and our system include a G-type star comparable to our Sun, rocky planets comparable to our Earth, and large planets comparable in size to Jupiter and Saturn. Differences include that all of the known Kepler-90 planets orbit relatively close in -- closer than Earth's orbit around the Sun -- making them possibly too hot to harbor life. However, observations over longer time periods may discover cooler planets farther out. Kepler-90 lies about 2,500 light years away, and at magnitude 14 is visible with a medium-sized telescope toward the constellation of the Dragon (Draco). The exoplanet-finding mission TESS was launched in 2018, while missions with exoplanet finding capability planned for launch in the next decade include NASA's JWST and WFIRST.

Experts Debate: How will humanity first discover extraterrestrial life?
Tomorrow's picture: open space

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< | Archive | Submissions | Index | Search | Calendar | RSS | Education | About APOD | Discuss | >

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.

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